Family/Spouse: Marie Princess Of Brabant. Marie (daughter of Henri I Duke Brabant and Maud D' Alsace, [DUCHESS OF BRAB) was born in 1190 in , , Brabant, Belgium; died in 1260. [Group Sheet] [Family Chart]

Otto married Beatrix Princess Of Germany, [EMPRESS OF HOLY on 22 Jul 1212. Beatrix (daughter of Phillipp Ii King Germany, [DUKE OF SWABIA and Irini Maria Princess Byzantine Empire, [EMPRESS OF GERM) was born in 1198 in , , Schwaben, BAVARIA; died on 11 Aug 1212. [Group Sheet] [Family Chart]