Sir John Harington was a British nobleman who inherited the title of 4th Baron Harington of Aldingham, Lancashire.
Background
He was the son of Robert Harington, 3rd Baron Harington, and Isabella, daughter and part heir to Sir Nigel Loring. Sir John Harington was to married Elizabeth, daughter of Edward Courtenay, 3rd Earl of Devon, and was said to be in much favour with King Henry V (1413–1422).
Career
He accompanied the king on his first expedition to France in 1415 with a company various listed at 25 men-at-arms, 11 men-at-arms and 20 archers, and 32 men-at-arms and 76 archers. He returned to France for a second expedition in 1417, serving under Humphrey, Duke of Gloucester with a company of 86 archers and 29 men-at-arms, but he died on 11 February 1418 of causes unknown during the course of the campaign. Before he left England, he made a will dated 8 June 1417.
Although dying in 1417, his distinctive English-style plate armour can be dated closer to c.1440, and it displays some interesting transitional features.