Career
According to some authors, he is considered to be a Croatian writer from Vojvodina, Serbia. Blažetin was an important collector of oral literature heritage of the Pomurje Croats. He lived and worked in Hungarian town of Tótszerdahely (Serdahel).
As a worker in education, he was an important author of workbooks, audio textbooks, and teaching manuals.
Blažetin wrote poetry for children in the Croatian language. He was the father of the Croatian poet Stjepan Blažetin.
The policy at that time dictated only Hungarian names could be used, so they are both shown as "István" in Hungarian documents.