He was preparing to leave Brunswick with his father-in-law for the purpose of being present at this assembly when Otto was suddenly taken unwell and expired on 9 June.
Brunswick Cathedral
Hij is getrouwd met Mathilde "Matilda" von Brandenburg.
Zij zijn getrouwd in het jaar 1228 te Schoningen, Brunswick, Thueringen, Holy Roman Empire (now Germany), hij was toen 23 jaar oud.Bron 1
Kind(eren):
Otto I "The Child" von Braunschweig-Lüneburg | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1228 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mathilde "Matilda" von Brandenburg |