An American Roman Catholic priest of Hungarian descent, serving in the Diocese of Trenton.

He was born in Fords, New Jersey, to William Siska and Barbara Szecsi (spelled Szechi in other sources). His sister, Helen Barbara Siska, was born in Perth Amboy in 1937. He completed his seminary studies at St. Charles College in Catonsville, Maryland, and then at St. Mary’s Seminary in Baltimore. He later earned a master’s degree from Iona College.

On June 11, 1960, Bishop George W. Ahr of Trenton ordained him a priest at St. Mary’s Cathedral in Trenton. After his ordination, he served as a summer assistant at Precious Blood Parish in Monmouth Beach, and later that same year, in 1960, he was appointed assistant pastor at St. Mary’s Parish in Barnegat. His subsequent assignments as an assistant pastor included the Blessed Sacrament and Ss. Peter and Paul parishes in Trenton, St. Anthony Parish in Hightstown, Corpus Christi Parish in Willingboro, St. James Parish in Woodbridge, and St. Anthony Parish in Port Reading. In Woodbridge, he also served as interim parish administrator. In Port Reading, he was a volunteer with the local ambulance service.

In 1975, he was appointed pastor of the Hungarian St. Stephen’s Parish (St. Stephen’s Church) in Trenton. He led the Hungarian community until 1979. During this same period, he also took on diocesan responsibilities: in 1975, he became the diocesan director of the Catholic Overseas Aid Fund, and during his tenure, he also played a leading role in the diocesan work of the Campaign for Human Development and Catholic Relief Services.

In 1979, he was appointed pastor of St. Raphael Parish, a position he held for nearly eighteen years, until June 1997. In addition to his parish duties, he served as chaplain to the White Horse Fire Company and was involved with the local chapter of the Knights of Columbus. He donated a significant portion of his personal collection of history books to St. Raphael School; the school’s library was later named after him. He also assisted with pastoral care at other parishes, serving as a weekend assistant at St. George Church in Titusville.

In June 1997, he took a leave of absence for health reasons. During the final years of his life, he lived at the Villa Vianney priests’ home and later at the St. Lawrence Rehabilitation Center in Lawrenceville. He passed away there on November 2, 2006, at the age of 72.