Henry Grey, 6th Earl of Kent

The execution of Mary, Queen of Scots at Fotheringhay Castle on 8 February 1587, drawn by Robert Beale, Clerk of the Privy Council, an eyewitness. The official witnesses, Henry Grey, 6th Earl of Kent and George Talbot, 6th Earl of Shrewsbury are seated on the scaffold at left, identified as numbers 1 and 2. Sir Amias Paulet, Mary's gaoler, is identified as 3, top, seated left below dais Henry Grey, 6th Earl of Kent (1541 – 31 January 1615) was an English peer. In 1587 he was one of the official witnesses at the execution of Mary, Queen of Scots.

He was married to Mary Cotton, daughter of Sir George Cotton and Mary Onley. There were no known children from the marriage; he was thus succeeded by his younger brother, Charles.