Thomas Vaughan (died 1483) Thomas Vaughan (died 1483) Sir Thomas Vaughan (c. 1410 – June 1483) was a Welsh statesman and diplomat, who rose to prominence before and during the Wars of the Roses. He began as an adherent of Jasper Tudor and King Henry VI of England, and was appointed to several offices by Henry. He was nonetheless a Yorkist by inclination, as were many Welshmen of the time. After the Yorkist victory in 1461 he became a loyal and important servant of King Edward IV. In 1483, he was executed by Richard III as part of his seizure of the throne. Vaughan
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