Thomas de Mowbray, 1st Duke of Norfolk, 1st Earl of Nottingham, 3rd Earl of Norfolk, 6th Baron Mowbray, 7th Baron Segrave, Lord Marshal, Earl Marshal, was born 22 March 1366 Epworth in Isle Of Axholme, Lincolnshire to John de Mowbray (1340-1368) and Elizabeth de Segrave (1338-1368) and died 22 September 1399 Venice of unspecified causes. He married Elizabeth le Strange (1373-1383) 1383 JL . He married Elizabeth FitzAlan (1366-1425) July 1384 JL in Arundel, Sussex. William I of England (1027-1087), Henry II of England (1133-1189), Alfred the Great (849-899)/s, Charlemagne (747-814)/s, Henry II of England (1133-1189)/s, Hugh Capet (c940-996)/s, William I of England (1027-1087)/s, Rollo of Normandy (860-932)/s.
|Offspring of Thomas de Mowbray and Elizabeth FitzAlan (1366-1425)|
|Thomas de Mowbray (1385-1405)||1385||8 June 1405 York|
|Margaret de Mowbray (1388-1459)||1388||1459||Robert Howard (1384-1436)|
|John de Mowbray (1392-1432)||1392||19 October 1432 Epworth||Katherine Neville (c1397-c1483)|
|Elizabeth de Mowbray (c1399-aft1423)||1399||1 December 1423||Michael de la Pole, 3rd Earl of Suffolk (1394-1415) Nicholas Audley (-1391) Michael de la Pole, 3rd Earl of Suffolk (1394-1415) Nicholas Audley (-1391) John Beaumont (c1395)|
|Isabel de Mowbray (?-1452)||1396||27 September 1452 England, United Kingdom||Henry de Ferrers, 6th Baron Ferrers of Groby (1394-c1463) Henry de Ferrers, 6th Baron Ferrers of Groby (1394-c1463) James de Berkeley, 1st Baron Berkeley (c1394-1463)|