He held the dignity of Ban of Severin[3] (1436–1439), Diocesan administrator (Steward) of the Diocese of Zagreb and Archdiocese of Kalocsa (from 1433), Count of Temes (from 1437) and Castellan of Nándorfehérvár in the associated kingdoms Hungary and Croatia.

One of those estates was Talovac (then spelled Thallowc, Tallowcz, Tallocz, Tallovec, Tallovez or Talloucz), which was located southwest of the town of Virovitica in the former Bjelovar-Križevci County, several kilometers southeast of the similar-named present-day village of Topolovica (in the municipality of Veliki Grđevac).

In the dynastic struggles in 1440–1443, which took place between Vladislaus I Jagiellon and Ladislaus V Habsburg (Posthumous), Franko as well as his brothers sided with the former.

But the crushing defeat suffered at the battle of Varna and the death of king Vladislav I in 1444 marked the beginning of a period of weakening family power.

In another campaign of the Hungarian army against the Turks, supreme commander John Hunyadi engaged Franko to participate in the second battle of Kosovo in 1448.