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 to the throne with any degree of validity. To strengthen his claim and unite the two feuding noble houses, Elizabeth Woodville and Margaret Beaufort agreed that the latter's son should marry the former's eldest daughter, Elizabeth of York, who upon the death of her brothers became the heiress of the House of York. Henry Tudor agreed to this plan and in December 1483 publicly swore an oath to that effect in the cathedral in Rennes, France. A month earlier, an uprising in his favour, led by Buckingham, had been crushed. Richard III's first Parliament of January 1484 stripped Elizabeth of