James was born in the early 1630s, probably in
Paisley, Scotland, the eldest son of
James Hamilton and his wife
Katherine Clifton. His father was the 2nd Earl of Abercorn. His mother was Dowager Duchess of Lennox from her previous marriage and Baroness Clifton of
Leighton Bromswold, England, in her own right. His parents had married in 1632 or not much before as she on 28 November 1632 obtained permission from the king to keep her precedence as a dowager duchess despite now marrying an earl. He had two brothers,
who are listed in his father's article. Both his parents were Catholics and therefore
recusants in Scotland. His mother died in Scotland while he was still an infant. As she was a Catholic, the Church of Scotland refused her a burial ceremony. As heir apparent of the Earl of Abercorn, James was styled Lord Paisley, which was at that time the
courtesy title for the heir apparent in the family according to the Scottish manner. The rank of this title is a
Lord of Parliament and is equivalent to an English or Irish baron. By 1646 Lord Paisley had become a good Presbyterian as is asserted in the proceedings of the General Assembly of the kirk of that year. == Marriage and children ==