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
Anne Woodville an Act of Parliament known as "Titulus Regius" which declared King Edward V and his siblings illegitimate. Elizabeth, now styled as Dame Grey, was forced to seek sanctuary with her daughters, while her two sons, the "Princes in the Tower" were kept in the Tower of London by the orders of King Richard III. On 25 June 1483, King Richard also ordered the executions of Anne and Elizabeth's brother Anthony Woodville, Earl Rivers, and Richard Grey who was Elizabeth's younger son by her first marriage to Sir John Grey of Groby. Anne Woodville, Viscountess Bourchier, died on 30 July 1489,