Career
Born in Cologne, Germany, Marx was ordained a priest for the Diocese of Corpus Christi on May 2, 1940. On July 6, 1956, Pope Pius XII appointed Marx auxiliary bishop of the Corpus Christi Diocese and he was consecrated on October 9, 1956. On July 9, 1965, Pope Paul VI appointed Marx of the Brownsville Diocese and he was installed on September 2, 1965.
On November 1, 1965, Bishop Marx died suddenly.