Father Martvon was the first pastor of St. Ladislas Roman Catholic Church and a casualty of the battle between Slovak and Magyar parishioners for control of the church. After having his life threatened on at least two occasions during the month of August 1891, he left St. Ladislas in July 1892 and returned to Europe. Father Martvon subsequently returned to the United States in 1894, becoming pastor at St. Andrew's Slovak Catholic Church in Johnstown, Pennsylvania. When he died at age 91 in 1948, he was at the time the oldest priest in the United States.
