Born in Ratkovci, Prekmurje, his parents were Péter Kollár and Judit Zselezen. He was ordained on 13 July 1882. He was a chaplain in Črenšovci until 1885 and later a parish clerk in Bogojina. From 1885 to 1887, he was a chaplain in Murska Sobota, after which he spent one year each in Beltinci and Turnišče. By 1900, he had become a priest in Beltinci.
Works
Mála biblia z-kejpami ali zgodba zvelicsanya za málo decsiczo : za I-II razréd normálszke sôle piszana po Gerely Józsefi ; z-27 z-leszá pritisznyenimi kejpmi od G. Morelli. – Budapest, Szent István Társulat, 1897.
Mála biblia z-kejpami ali zgodba zvelicsanya za málo decsiczo : za I-II razréd normálszke sôle piszana po Gerely Józsefi ; z-27 z-leszá pritisznyenimi kejpmi od G. Morelli. – 2. natiszk. Budapest, Szent István Társulat, 1898.
Návuk odpotrdjenyá ali férme. Z-vogrszkoga velikoga katekizmusa na sztári szlovenszki jezik obernyeni po Kollár Petri beltinszkom plebánusi 1902.