誰が ロマン・ダニーロヴィチ と結婚しましたか？

ロマン・ダニーロヴィチ（ロシア語: Роман Данилович、1230年頃 - 1258年あるいは1260年）はガーリチ・ヴォルィーニ公ダニールの四男である。ルーツク公（在位：? - 1254年）、ノヴォグルドク公（在位：1254年 - 1258年）。

Gertrude of Austria (also named Gertrude of Babenberg) (c. 1226 – 24 April 1288) was a member of the House of Babenberg, Duchess of Mödling and later titular Duchess of Austria and Styria. She was the niece of Duke Frederick II of Austria, the last male member of the Babenberg dynasty. She was, according to the Privilegium Minus decree the first in line to inherit the Duchies of Austria and Styria after the death of childless Frederick, but these claims were disputed by her aunt Margaret of Austria, Queen of Bohemia.