Johann married Sophie Princess Of Denmark, [MARGRAVINEOF in 1231. Sophie (daughter of Valdemar Ii "Sejr" Valdemarsson Kin, OFDENMARK and Berengaria Princess Of Portugal) was born in 1217 in Of, , Denmark; died on 3 Nov 1248 in , Flensburg, Schleswig-Holste, Prussia; was buried in , Franz, Kloster, Ribe. [Group Sheet] [Family Chart]