11 April 1184 in Winchester to Heinrich der Löwe (c1130-1195) and Matilda of England (1156-1189) and died 13 December 1213 of unspecified causes. He married Helen of Denmark (c1174-1233) 1202 JL . Notable ancestors include Henry II of England (1133-1189), William I of England (1027-1087), Charlemagne (747-814), Hugh Capet (c940-996), Alfred the Great (849-899). Ancestors are from France, the United Kingdom, Germany, Belgium, the Netherlands, Russia, Ukraine.Wilhelm Longsword of Winchester Welf von Braunschweig-Lüneburg was born
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|Offspring of Wilhelm von Braunschweig-Lüneburg and Helen of Denmark (c1174-1233)|
|Otto von Braunschweig-Lüneburg (c1204-1252)||1204||9 June 1252 Lüneburg, Lower Saxony, Germany|| Mechthild von Brandenburg (c1210-1261)|
Namesakes of Wilhelm von Braunschweig-Lüneburg (1184-1213)