James Hamilton held the office of Member of Parliament (M.P.) for Linlithgow Scotland in 1597. He was invested as a Privy Counsellor (P.C.) Scotland on 14 December 1598. He was made Sheriff of Linlithgow in 1600, received large grants of lands in Scotland and Ireland. He was created 1st Lord Abercorn, co. Linlithgow Scotland on 5 April 1603. In 1604 he served on the commission which treated for a proposed union of Scotland with England. He was created 1st Lord Paisley, Hamilton, Mountcashell and Kirkpatrick [Scotland] on 10 July 1606. He was created 1st Earl of Abercorn Scotland on 10 July 1606.4 He held the office of Member of the Council of the province of Munster on 20 May 1615.4 He held the office of Gentleman of the Bedchamber to King James VI.
He married Marion, daughter of Thomas Boyd, 6th Lord Boyd, and left nine children:
Lady Anne Hamilton (1592–1620), married Hugh Sempill, 5th Lord Sempill and had issue
James Hamilton, 2nd Earl of Abercorn (c. 1604 – c. 1670), created Lord Hamilton, Baron of Strabane in the Peerage of Ireland in his father's lifetime.
Sir William Hamilton, 1st Baronet (c. 1605–1680)
Claud Hamilton, 2nd Baron Hamilton of Strabane (c. 1606–1638)
Sir George Hamilton, 1st Baronet (c. 1607–1679)
Lady Lucy Hamilton (b. bef. 1618)
Sir Alexander Hamilton (d. bef. 4 May 1669), married and had issue
Lady Margaret Hamilton (d. c. 4 May 1642), married Sir William Cuninghame of Caprington
Lady Isobel Hamilton
Multiple Death Dates were included in the file. These could be 20 Jul 1619 at Castell Hamilton, Stirling, Scotland (the currently accepted date), but are also listed as 23 Mar 1618 in Lanarkshire, Scotland.
It may be possible to confirm family relationships with James by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
Y-chromosome DNA test-takers in his direct paternal line on WikiTree: