Marcus Fabius Dorsuo, consul in 345 BC, possibly also interrex in 340 and in 334 one of the commissioners for establishing a colony (triumviri coloniae deducendae) at Cales.
In the interim, it was the Roman Catholic Primate (the Archbishop of Gniezno) who served as the regent, termed the "interrex" (Latin: ruler "between kings" as in ancient Rome).