John de Mowbray, 3rd Baron Mowbray, was born 29 November 1310 in Hovingham, Yorkshire, England, United Kingdom to John de Mowbray, 2nd Lord Mowbray (1286-1321) and Aline de Braose (c1292-1331) and died 4 October 1361 Bedford, England, United Kingdom of unspecified causes. He married Maud de Holand (bef1322-) 26 February 1322 JL . He married Joan Plantagenet (c1310-c1349) 28 February 1326 JL . He married Elizabeth de Vere (-1375) 1351 JL . William I of England (1027-1087), Alfred the Great (849-899)/s, Charlemagne (747-814)/s, Hugh Capet (c940-996)/s, William I of England (1027-1087)/s, Rollo of Normandy (860-932)/s.
|Eleanor de Mowbray (-1387)|
|John de Mowbray (1340-1368)||25 June 1340 Epworth, Isle of Axholme, Lincolnshire, England, United Kingdom||1368 Constantinople, Turkey||Elizabeth de Segrave (1338-1368)|
|Blanche de Mowbray (c1341-1409)|