John Grey of Groby Richard III in June 1483. <br> In 1491, his widow, by then Queen Dowager, became the co-heiress of her brother, Richard Woodville, 3rd Earl Rivers. She died a year later. Sir John Grey was killed in the Second Battle of St Albans in 1461, fighting for the Lancastrian cause. His widow, Dame Elizabeth Grey, later secretly married Edward IV who was the successful Yorkist claimant to the throne. 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
Elizabeth Woodville a battle of wills that finally resulted in Warwick switching allegiance to the Lancastrian cause, and to the execution of Elizabeth's father Richard Woodville in 1469. After the death of her husband in 1483 Elizabeth remained politically influential even after her son, briefly proclaimed King Edward V of England, was deposed by her brother-in-law, Richard III, and she would play an important role in securing the accession of Henry VII to the throne in 1485, which ended the Wars of the Roses. After 1485, although her daughter Elizabeth of York married Henry VII and became the mother of Henry VIII,