Holy Trinity Catholic Church began life in the late 1800s in the bustling coal patch of Moon Run.
The Catholics and Protestants each met alternately in a large meeting room in the old Company Store, which also housed the post office and jail. Around the turn of the 20th Century, both Protestants and Catholics began building their own churches. The Protestants built the Moon Run Presbyterian Church on McKees Rocks Road. In 1909, the Catholics established the Holy Trinity Church nearby on Steubenville Pike across from what later became a funeral home. The congregation met in the basement until the structure was completed.

Holy Trinity began as a mission of St. Columbkille Church of Imperial. The church building was dedicated in May 1909 and the adjacent rectory was added in 1946. Holy Trinity continued as a mission church until 1944, when it became a separate parish with 168 families.

Today, you can still see the outline of a cross above the former rectory door, while the renovated church has operated as several businesses, the latest being a dentist’s office.
In 1964, ground was broken for a large, modern church building at the intersection of Beaver Grade Road and Steubenville Pike, and construction was completed in 1966. The Holy Trinity Catholic School was soon added, recently renamed the Archangel Gabriel Catholic School, encompassing preschool through eighth grade.

The “new” church, now more than 50 years old, recently joined with St. Malachy Church in Kennedy and St. Mary Help of Christians Church in McKees Rocks to form the Archangel Gabriel Parish.
For more than a century, Holy Trinity has hosted weddings, funerals, christenings, blood drives, fish fries, bingos, movie nights, teen and young adult events, and much, much more.
Both church and school continue to play an important part in the life and growth of the Robinson community.



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