István Gulyássy was born on February 11, 1891, in Jakabfalva. His father’s name was István Gulyássy, and his mother’s name was Anna Hrebik. He was orphaned at an early age and later moved to the United States as a young man. He completed his studies in Pittsburgh and Homestead, then became a student at St. Vincent’s College in Beatty, Pennsylvania, and later prepared for the priesthood at St. Mary’s Seminary in Baltimore. He was ordained a priest in the United States on September 7, 1919.

As a member of the early generation of American Greek Catholic priests, he served the Rusyn and Hungarian faithful. He served briefly in Pennsylvania, then from 1920 until his death, he served as pastor at St. John’s Greek Catholic Church in Cleveland.

In accordance with Eastern Catholic tradition, he was a married priest; his wife’s name was Gabriella, and they had three children. He became a U.S. citizen in 1920.

He played an active role in both ecclesiastical and cultural life: together with György Hintz, he edited the journal Vozgy (Leader).

He passed away on January 11, 1966, in Parma, Ohio; his grave is located in Holy Spirit Cemetery.

A Vozsgy (Vezető) c. folyóirat szerkesztője Hintz Györggyel.