Descendants of Gavin Hamilton have y-DNA tested. Those results are shown here.

Gavin HAMILTON died before  Dec. 1698 Prince George's Co., MD;1 married
Elizabeth living 3 Jan. 1699 when she had remarried John GREENE2
children:
1. Andrew HAMILTON1 m. Mary4 BEALL5; died between 23 Oct. 1718 and 24 June 1719
   Prince George's Co., MD4
2. daughter HAMILTON1
3. daughter HAMILTON1

Andrew HAMILTON and first wife Mary3 had children:
1. Gawen HAMILTON b. 4 Nov. 1701 St. John's Parish, Prince George's Co., MD3;
   m. Ann;7 living 17437
2. Mary HAMILTON b. 24 Nov. 1705 St. John's Parish, Prince George's Co., MD3

Andrew Hamilton and second wife Mary3,4 BEALL5 had children:
3. Thomas HAMILTON b. 21 May 1710 St. John's Parish, Prince George's Co., MD;3,6
   m.1. Ruth SCOTT;58,59 m.2, Ann;8 TURNER60 d. between 14 Jan. 1782
   and 6 Mar. 1784 Prince George's Co., MD8
4. Andrew HAMILTON6 b. ca. 1716; m. Mary;9 d. before 28 Mar. 1778
   Prince George's Co., MD9
5. Ninian HAMILTON6 b. say  1717; m. Margaret6 LUCAS;10 d. ca. 1784
   Randolph Co., NC11
6. George HAMILTON6 m. Mary GORDON;12 d. ca. 175215 at sea on trip to London13

After the death of Andrew HAMILTON, his widow Mary (BEALL) remarried to Thomas
EVANS14 by 1724.  A widow with small children and real estate as Mary had
often remarried within months of the death of their husband, and they likely
married as early as 1719. Thomas EVANS had several proved children, although it is
unknown if all were by his wife Mary.  Because of his known age, Walter was likely
a son by Mary.  Jane may have been by a first wife, in that in her will she referred
to both Andrew HAMILTON and George HAMILTON as brother-in-law, while Elizabeth Evans
was called her sister. The term "brother-in-law" was commonly used for step siblings,
and less commonly for half siblings.

Children of Thomas EVANS:
1. Elizabeth EVANS20 never married;22 d. between 18 Apr. and 8 June 1767 Prince
   George's Co., MD22
2. Walter EVANS20 b. ca. 172017 or 172118; m. Elizabeth18 BEALL19 (daughter of George b.
   ca. 1695); living 1791 Prince George's Co., MD56
3. Charles EVANS20
4. Jane EVANS never married;16 d. between 8 and 12 Dec. 1766 Prince George's Co., MD16
5. Joseph EVANS21 m. Prissilla;23 d. before 22 Dec. 1783 Montgomery Co., MD23

Ninian HAMILTON and Margaret LUCAS had children:
1. Ninian Beall HAMILTON b. 28 Nov. 1739;24,26 m. Ann FIELD25,57; d. 6 Apr. 183126
   St. Louis Co., MO27
2. Thomas HAMILTON b. 10 May 1741;24 m. Blanch;50 d. 181548 to 1821 Rowan Co., NC49
3. Archibald HAMILTON b. 5 May 1743;24 m. Mary HAWKINS;28 living 1825 NC28
4. Mathew HAMILTON b. 22 Feb. 174524
5. Ann HAMILTON b. 14 Feb. 174724
6. Charles HAMILTON b. 20 Feb. 1749;24; d. about 1803 Randolph Co., NC51
7. Mary HAMILTON b. 5 Mar. 1751;24 never married, had child by Mr. CAMPBELL;30
   d. 17 May 1821 Hope, Forsyth Co., NC29
8. Jasula HAMILTON b. 20 Aug. 175424
9. Elizabeth HAMILTON b. 20 Aug. 175424
10. Sarah HAMILTON b. 6 July 175624
11. Horatio HAMILTON b. 6 July 1756;24,53 m.1. Lucy PEDDYCOURT 17 Dec. 1782;31
    m.2. Sarah (SCHNEIDER)55 FREY54 17 Feb. 1801;54 d. 8 Mar. 1840 Hope, Forsyth
    Co., NC53

Ninian Beall HAMILTON and Ann FIELD57 had children:
1. William HAMILTON32 b. say 1767; m. Elizabeth TANZY;34 d. between 1 June 1830,33
   and 22 Dec. 1832 St. Louis Co., MO35
2. Andrew HAMILTON32 b. say 1769; m. Penelope;36 d. between 26 and 29 May
   1849 Franklin Co., MO37
3. Margaret HAMILTON32 b. say 1771;52 m. Leonard FARRAR;32 living 1843 Franklin
   Co., MO38
4. Sarah HAMILTON32 b. ca. 1774;39 m. Theophilas McKINNEY 26 Mar. 1801;32,57 
   living 1840 St. Louis Co., MO39
5. Ninian HAMILTON b. 19 May 1777;26,32 m. Sarah WOODS 14 Apr. 1803;26 d. 14 June
   183626 St. Louis Co., MO27
6. Jane HAMILTON32,40 m.bond Joshua TANZEY32 12 Sep. 1799;40
7. Jeremiah HAMILTON32 b. 6 July 1782;41 m.1. Martha MITCHELL 5 Jan. 1810;42
   m.2. Elizabeth FISHER 13 Mar. 1821;43 d. between 1 July and 10 Dec. 1847
   Franklin Co., MO44
8. Ann HAMILTON32 born say, 1784; living 180232
9. Mary32 "Polly"45 HAMILTON32 b. ca. 1786; m. Robert BAY;46 d. between 31 May 183647
   and 2 May 1837 Franklin Co., MO45

1. Gawen Hamilton will, Prince George's Co., MD Will Book 1:8.
   Gavin Hamilton will transcription.
2. Gavin Hamilton administration bond, Prince George's Co., MD administrators bonds 1:14.
3. Register of St. John's or Piscataway Parish, p. 239 [image 129 of 222].
4. Andrew Hamilton will transcription, Maryland wills 15:172-174, FHL microfilm 0,012,846.
   Andrew Hamilton will, Prince George's Co., MD Will Book 1:104-105.
5. That Mary was a Beall is shown by:
    a) In 1706, Ninian Beall gave his daughter Mary a Negro girl about 5 years old 
       called Nanny. [Prince George's Co., MD land records C:185a-186a]
    b) In his 1717 will, Ninian Beall gave his "son-in-law" Andrew Hambleton a Negro
       woman called Allie. [Ninian Beall will, Prince George's Co., MD Will Book 1:92-93.]
    c) Andrew Hamilton's 1719 inventory included a Negro woman named Nanny, and
       a very old Negro woman named Ailie. [Andrew Hamilton inventory, Prince George's Co., MD
       Inventories B. E. No. 1:353-356.]
6. Evidence for children of Andrew is:
   a) Gawen Hamilton on 9 Dec. 1690 purchased the 400 acre tract Attwoods
      Purchase from John Attwood. [Charles Co., MD land records R1:132-133]
   b) In his will, Gavin Hamilton left all his real estate to his son Andrew. [See #1]
   c)  Andrew Hambleton and wife Mary (x) Hambleton on 3 Mar. 1703 sold 122 acres
      part of Hambleton and part of Attwoods Purchase to William
      Tannyhill. [Prince George's Co., MD land records C:57a-58a, FHL microfilm
      0,014,247]
   d) Andrew Hamilton in will stated for his land to be equally divided among his 
      children. [See #4]
   e) In 1750, each in possession of 89 acres of Attwoods Purchase were Thomas
      Hamilton, Andrew Hamilton, and George Hamilton. [Calvert Papers, Prince George's
      and Frederick County 1750 Debt Book, pp. 13 & 74, FHL microfilm 1,685,860]  
   f) Andrew Hamilton on 10 Dec. 1714 received a patent on the 123 acre tract
      Hamiltons Venture. (Maryland Patents RY1, pp. 261-262 [images 163-164 of 320]).
   g) Ninian Hamilton (wife Margaret released dower) on 15 June 1747 sold 84 (sic)
      acres of Hamiltons Venture to Dunkin Ferguson. [Prince George's Co., MD
      land records EE1:231-233, FHL microfilm 0,014,251]  In the 1750 Debt Book
      (p. 53) Dunkin Ferguson was listed with 89 acres of Hamiltons Adventure.
7. Prince George's Co., MD land records BB1:45-46, FHL microfilm 0,014,250.
8. Thomas Hamilton will, Prince George's Co., MD wills T#1:184, FHL microfilm 0,014,279.
9. Andrew Hamilton inventory, Prince George's Co., MD inventories ST1:33-34,
   FHL microfilm 0,014,286.
10. Thomas Lucas will, Prince George's Co., MD Will Book 1:483-484.
    Names daughter Margaret Hamilton.
11. Ninian Hamilton file, 1784, Randolph Co., NC loose estate papers.
12. George Forbes aditional account, MD Accounts 34:98-102.
13. The Maryland Gazette, No. 376, 9 July 1752, p. 3. column 2.
14. Evidence that Andrew Hamilton's widow Mary married Thomas Evans includes:
    a) On 15 Aug. 1769 a commission to determine the boundaries of Ackinhead
       took the deposition of Thomas Hamilton.  "Thomas Hamilton aged fifty
       nine years or thereabouts did depose & say when he was a Lad Thomas Evans
       this Depont Father in Law & old Thos. Johnson set a Compass......"
       [Prince George's Co., MD Land Records AA#2:11, FHL microfilm 0,014,253]
    b) The inventory of George Hamilton was approved by "brothers" Andrew Hamilton
       and Walter Evans. [See #15]
    c) Jane Evans in her will left bequests to her "brother-in-law" Andrew Hamilton and
       to George Hamilton and Charles Hamilton, sons to her "brother-in-law" George
       Hamilton, and to her sister Elizabeth Evans. [See #16]
    d) Among those properties possessed by Thomas Evans in 1750 were 193 acres
       of the tract Atwoods Purchase. [Calvert Papers, Prince George and 
       Frederick County Debt Book, FHL microfilm 1,685,860, See also #6e.]  There
       is no record of his having purchased that land, and is believed to be his wife
       Mary's 1/3 dower as listed in Andrew Hamilton's will. [See #4]
    e) The 1778 inventory of Andrew Hamilton had Thos. Hamilton and Walter Evans
       sign as "kindred." [See #9]
    e) On 14 March 1714 [1714/5] William Tanihill, Charles Beale, Andr. Hamelton, and Alix. 
       Harbet purchased pew number 6 in the St. John's Parish church.  They had paid their
       dues on 25 May 1724. On 15 May 1730 summonses were to be issued to the proprietors
       of the "pew in Dispute" who were Mr. Tanyhill, Mr. Beall, Mr. Johnson, Mr. Harbett,
       and Mr. Evans, concerning the dispute that had arisen by Mrs. Norton buying
       Gawen Hamilton's right which was yet held by Thomas Evans. [See #3, pages 35-36, 48,
       and 55.
15. George Hamilton inventory, Prince George's Co., Maryland Inventories DD2:317-320.
16. Jane Evans will, Prince George's Co., MD Will Book 1:577.
17. Prince George's Co., MD land records TT:366, FHL microfilm 0,014,252.
18. Gaius Marcus Brumbaugh, Maryland records : Colonial, Revolutionary, County 
    and Church from Original Sources, (Baltimore: Genealogical Publishing Co., 1975),
    Vol. 1, p. 62. [image 72 of 524]
19. George Beall will, Montgomery Co., MD will A:262-263.
20. Walter Evans will, Prince George's Co., MD Will Book 1:195-196.
21. Prince George's Co., MD land records Y:154-155, FHL microfilm 0,014,250.
    29 Mar. 1740 deed of gift from Joseph Belt and to his "Godson Joseph Evans son of Thomas Evans."
    Also acknowledged by wife Margery Belt.  Note: Joseph Belt's first wife Hester/Esther Beall
    was a sister to Mary Beall.
22. Elizabeth Evans will, Prince George's Co., MD Will Book 1:596-597.
23. Joseph Evans inventory, Montgomery Co., MD Will Book B:176-177, FHL
    microfilm 0,014,230.
24. Dolores Shepherd Miltenberger and the Rev. Gordon Miltenberger, Three
    Hamiltons of Maryland: Gavin, Andrew, Ninian, (Dallas, TX: Miltenberger, 1983),
    42.
    Transcript of, and cites Family Records A:53, Moravian Archives, Winston-Salem, NC.
25. Fredric Z. Saunders, 28 Sep. 2001 post to Genforum, Field Family Forum.
26. Miltenberger, Three Hamiltons, 77-81.
    Photocopy of Bible of Ninian Hamilton (born 1777), published 1823.
27. 1830 St. Louis Co., MO census, Ninian Hamilton household, p. 316.
    The household included males age 50-60 [Ninian born 1777] and age 90-100 [Ninian
    born 1739.]
28. Miltenberger, Three Hamiltons, 102.
29. Adelaide L. Fries, Records of the Moravians In North Carolina, (Raleigh:
    State Department of Archives and History, 1947), VII: 3470.
30. Faye Moran, Campbell Family..
31. Miltenberger, Three Hamiltons, 22, 112.
32. Miltenberger, Three Hamiltons, 23.
    Transcript of letter written 5 March 1802 by Ninian B. Hamilton.
33. William Hamilton household, 1830 St. Louis Co., MO census, p. 311.
    Male age 60-70 in household.
34. St. Louis Co., MO Probate Court Digitization Project: 1802-1900,
    Levi Tanzey estate file, 1813, image 29/51.
35. St. Louis Co., MO deed book U:73.
36. St. Louis Co., MO deed book B2:229.
37. Andrew Hamilton estate file, 1850, Franklin Co., MO estate files,
    Images 802-855.
    Image 814 Dr. William Patton charged for visits on 22, 24 and 26 May 1849
    Image 823 bill for shrouding on 29 May 1849
38. Leonard Farrar Revolutionary War pension application file S17406.
39. 1840 St. Louis Co., MO census, T. McKinnney household, p. 268.
    Female age 60-70 in household. Had one child at time of #32 in 1802. 
40. Green Co., KY marriage bonds and consents, 1799.
     Joshua Tansey-Mary (sic) Hamilton. Bondsman: John Caldwell.
    While the bond states the bride is Mary Hamilton, the consent is signed for his
    daughter Jane by Ninian Bll Hamilton.

    Green Co., KY loose original minister returns contains the 15 Oct. 1805 list of 
    Jeremiah Abell of 25 couples, in which he stated he neglected to record the dates
    at the time of marriage.  The 8th listing is for Joshua Tansy to Jean Hamilton.

    See also #32 where Ninian B. Hamilton in 1802 stated his daughter Jane
    was married to Joshua Tanzy, and that his daugther Mary was single.
41. Miltenberger, Three Hamiltons, 177.
42. Franklin Co., MO marriage records A:35.
43. Franklin Co., MO marriage records A:12.
44. Jeremiah Hamilton will, Franklin Co., MO wills B:51, FHL microfilm 0,944,54.
45. Polly Bay papers, Franklin Co., MO adminisration bonds, 1837,
    alphabetical, images 471-474.
46. Miltenberger, Three Hamiltons, 183.
47. Robert Bay papers, Franklin Co., MO administration bonds, 1836,
    alphabetical, images 408-410.
48. Rowan Co., NC Court of Pleas and Quarter Sessions Minutes 9, p. 360.
      Jury to enquire into the idiocy or lunacy of Thomas Hamilton.
      Note his grandson Hannibal Hamilton was bound at the same time.
49. Blanch Hamilton will, Rowan Co., NC original loose wills.
      Compare the mark she used with the mark in #50a.
    Blanch Hamilton will, Rowan Co., NC Will Book H:125-128.
50. Evidence that Blanch was the wife of Thomas Hamilton is:
    a) Thomas and Blanch signed as witness to will of Thomas Pugh in 1794.
       Compare her mark with that in #49.
       [Randolph Co., NC original loose wills, Thomas Pugh folder, 1794.]
    b) Thomas Hambleton as a resident of Rowan Co., on 4 Aug. 1809 sold part of two
       tracts in Randolph Co. granted to Harmon Husbands, one of which was sold
       to Aquilla Jones who sold to Ninian Hambleton who sold to Thomas. 
       [Randolph Co., NC Record of Deeds 11:397-398.]
    c) Samuel Hampleton purchased 241 acres in Rowan County on 4 Mar. 1809.
       [Rowan Co., NC Deed Book 22:119-120.]
    d) The 241 acres was taxed to Thomas Hamilton and Samuel Hamilton in various
       years. Thomas was also taxed on the same acreage in 1813 that Aaron Hamilton
       was taxed on in 1812. [Rowan Co., NC  1809-1814 tax book, FHL microfilm 1,760,528.]
       1809, Capt. George Smith's Co., p. 16, Thomas Hamilton 241 acres.
       1810, Capt. Smith's Co., p. 132, Thomas Hamilton 241 acres.
       1811, Capt. Smith's Co., p. 188, Samuel Hamilton 241 acres.
       1812, Capt. Smith's Co., p. number not readable, Samuel Hamilton 241 acres,
             Aaron Hamilton 193 acres.
       1813, Capt. George Smith's Co.,p.. 309, Thomas Hamilton 193 acres, Samuel Hamilton 240 (sic) acres.
     f) See #49 where Blanch Hamilton named [among others] eldest son
        Samuel L. Hamilton and youngest son Aaron Hamilton.
51. Charles Hamilton file, 1804, Randolph Co., NC loose estate files.
52. 1840 Franklin Co. MO census, Margaret Farrar household.
    Margaret age 60-70.  First child born in 1789, see Miltenberger p. 160.
53. Horatio Hamilton headstone, Hope Moravian Old (Original) God's Acre Cemetery,
    Clemmons, Forsyth Co., NC.
54. Records of the Moravians in North Carolina, Volume 6, p. 2684.
55. Records of the Moravians in North Carolina, Volume 8, p. 3769.
56. Prince George's Co., MD Land Records JJ2, pp. 566-569.
57. St. Charles Borromeo Catholic Church, St. Charles, MO Translations of 
    Parish Records, pp. 116-117.
    26 Mar. 1801 Theophile McKinnon, son of Dan McKinnon and Catherine Lanam
    native of Maryland, widower of Sara McDonald, and Sara Hamilton, daughter
    of Ninian Hamilton and Ann Field, native of North Carolina.
58. Willian Scott will, Maryland Will Book 28, pp. 382-383.
     Names dauhter Ruth Hamilton.
59. Prince George's County, Maryland, Land Records Y, pp. 603-604.
     1 Sep. 1742 deed from William Scott to "son in law" Thomas Hamilton.
60. Elizabeth Turner will, Prince George's County, Maryland, Will Book Liber T, No. 1, pp. 345-346.
     Bequest to heirs of daughter Ann Hamilton.