James Hamilton, 1st Duke of Hamilton

His Grace The Duke of Hamilton KG PC
Portrait by Sir Anthony van Dyck, 1640
Master of the Horse
In office 1628–1644
Monarch	Charles I
Preceded by	The Earl of Holland
Succeeded by	Prince Rupert of the Rhine
Personal details
Born	19 June 1606 Hamilton Palace, Lanarkshire, Scotland
Died	9 March 1649(1649-03-09) (aged 42) Old Palace Yard, Palace of Westminster, London, England
Spouse	Margaret Feilding, Duchess of Hamilton
Children	Anne Hamilton, 3rd Duchess of Hamilton Susannah Kennedy, Countess of Cassillis Four children who died in infancy
Parent(s)	James, 2nd Marquess of Hamilton Lady Ann Cunningham

James Hamilton, 1st Duke of Hamilton, KG, PC (19 June 1606 – 9 March 1649), known as the 3rd Marquess of Hamilton from March 1625 until April 1643, was a Scottish nobleman and influential political and military leader during the Thirty Years' War and the Wars of the Three Kingdoms.