Birth of John de la Pole, duke of Suffolk, only son of William de la Pole and Alice Chaucer.

As a child, John was married Margaret Beaufort, but the marriage contract was dissolved in February 1453 by Henry VI.  In 1458 he married instead Elizabeth, the daughter of Richard, duke of York, and Cecily Neville, a sister of Edward IV and Richard III.  They had 11 children.

Reference:

Michael Hicks, ‘Pole, John de la, second duke of Suffolk (1442–1492)’, Oxford Dictionary of National Biography, Oxford University Press, 2004.  [accessed online 30 Aug. 2015]

Tags: Alice Chaucer, de la Pole