Sir John Hamilton of Cadzow, 4th Laird of Cadzow (b. bef. 1370 – d. c. 1402) was a Scottish nobleman and soldier.
He succeeded his father, David Hamilton of Cadzow, no later than 1392, when he appears on a charter of Andrew Murray of Touchadam as Dominus de Cadzow.
He was imprisoned, along with his brothers William and Andrew, in Norwich in 1396. Richard II of England ordered their release from the Mayor and bailies of that city on 29 June. It appears that their imprisonment was due to violations of the truce between the Kingdoms of England and Scotland. A John Hamilton, either his brother John Hamilton of Bardowie, or uncle John Hamilton of Fingalton, was released from the Tower of London on the same date. Hamilton and his uncle seem to have found themselves guests of the English again, when at a meeting of Border commissioners at Hawdenstank on 28 October 1398, the first point of business was the release of Hamilton of Cadzow, and Hamilton of Fingalton and others in their entourage. The Hamiltons had been caught at sea by English privateers, again in violation of the truce. The English were urged to release the ship and restore their goods to them, or alternatively pay suitable recompense.
There is no record of Hamilton's death, though it is possible that he was one of the prisoner fatalities at the Battle of Homildon Hill in 1402, where a Sir John Hamilton, elder, appears on a list of captives.
Marriage and children
- John Hamilton married Janet or Jacoba Douglas, daughter of Sir James Douglas, 1st Lord Dalkeith, prior to 1388. It was thought that he had three sons by her:
- James Hamilton of Cadzow
- David Hamilton of Dalserf
- Walter Hamilton of Raploch
However DNA testing of descendants of James and Walter in the Hamilton Surname DNA Project show that these two did not have the same father. The DNA project shows that the descendants of Walter and his uncle John Hamilton of Fingalton are related, which suggests that James's biological father was not from the same family.
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