The Babonić family divided their properties in 1313 and 1314 between brothers Ivan (d. after 1334), Stjepan IV (d. 1316) and Radoslav II (fl. 1284–1314).

After Francis of Blagaj (d. 1576) successfully lobbied for the recognition of their forged documents with Emperor Maximilian II in 1571, the family continued to make these claims and would refer to themselves as Ursini von Blagay.

[3] Stjepan IX Blagajski participated in the 1527 election in Cetin that brought Ferdinand I of Habsburg to the Croatian throne.

After the marriage of Count Francis (Franz) to Maria Magdalena, Baroness von Lamberg (1540–1580), they also became owners of Boštanj Castle, which remained in their possession until the end of the 19th century.

[2] Count Rihard Ursini von Blagay (1786–1858) was a Slovene aristocrat, botanist and patron of the arts, who mostly resided at Polhov Gradec.