Sir John Grey of Groby

Sir John Grey of Groby, Leicestershire (c. 1432 – 17 February 1461) was a Lancastrian knight, the first husband of Elizabeth Woodville who later married King Edward IV of England, and great-great-grandfather of Lady Jane Grey.

Titles Grey was the son and heir of Elizabeth Ferrers, 6th Baroness Ferrers of Groby (1419–1483) and of Sir Edward Grey (c. 1415–1457), a son of Reynold Grey, 3rd Baron Grey of Ruthin. After the death of Grey's father in 1457, his mother married his stepfather, John Bourchier, in 1462; he assumed his wife's title, Baron Ferrers of Groby.

In 1491, John's widow, by then queen dowager, became the co-heiress of her brother, Richard Woodville, 3rd Earl Rivers. She died a year later.

Death at the battle of St Albans Sir John Grey was killed in the Second Battle of St Albans in 1461, fighting for the Lancastrian cause. His widow, Lady Elizabeth Grey, later secretly married Edward IV who was the successful Yorkist claimant to the throne.