Background
Through her mother she was a granddaughter of John of Gaunt.
Through her mother she was a granddaughter of John of Gaunt.
On 12 January 1412, Katherine was married at the age of 12 to John Mowbray, 2nd Duke of Norfolk (1392–1432). Their only known child was John de Mowbray, 3rd Duke of Norfolk (1415–1461). Katherine married for a second time to Thomas Strangeways (c 1395-before 1442) - they had 2 daughters:
Joan Strangeways, who married Sir William Willoughby.
Their daughter Cecily married Edward Sutton, 2nd Baron Dudley.
They were ancestors of Herbert Hoover, among many others Katherine Strangeways, who married Henry Grey, 4th (7th) Baron Grey of Codnor.