N'afọ 1248, ọ lụrụ Gertrud, bụ́ nwa nwanne nwoke nke nwoke ikpeazụ so n' ezinụlọ Babenberg, bụ́ Duke Frederick nke Abụọ nke Ọstria.
N'ezie, ụdị ahịrịokwu dị mgbagwoju anya bụ "N'afọ 1248, ọ lụrụ Gertrud, nwa nwanne nwoke nke nwoke ikpeazụ nke Babenberg famoly, Duke Frederick nke Abụọ nke Austria ma weta Duchies nke Austria na Styria dị ka ihe nketa ya".