James Hamilton, 1st Earl of Abercorn PC (S) (1575–1618), was a Scottish diplomat for James VI and an undertaker (a term for a British colonist) in the Plantation of Ulster in the north of Ireland.
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Birth and origins
James was born on 12 August 1575, probably at Paisley, Scotland, the eldest son of Claud Hamilton and his wife Margaret Seton. His father was a younger brother of the 3rd Earl of Arran, and would be created Lord Paisley on 24 July 1587. His paternal grandfather was the 2nd Earl of Arran in the Peerage of Scotland and the Duke of Châtellerault in the Kingdom of France. His father's family descended from Walter FitzGilbert, the founder of the House of Hamilton, who had received the barony of Cadzow from Robert the Bruce.
James's mother was a daughter of George Seton, 7th Lord Seton. His parents had married in 1574 at Niddry Castle, West Lothian, Scotland. Both sides of the family were Scottish, Catholic, and supporters of Mary, Queen of Scots. His father and his father-in-law had both fought for her at Langside in 1568.




