Catholics in Fort Worth began meeting together for regular worship services by 1875. They met in private homes, and were served by traveling priests. In 1876 Bishop Claude Dubuis of the Diocese of Galveston assigned a young Irish priest, Father Thomas Loughrey, to establish a parish in Fort Worth. In July 1876 the Diocese purchased two lots at this site for a church to be named for Polish Jesuit Saint Stanislaus Kostka. Within three months, on October 29, 1876, Father Laughry said the first High Mass in the frame structure. He continued to serve the church until 1884, when Father Jean Marie Guyot was assigned as Pastor. The church opened a Catholic School in the parish. Classes initially were taught by Father Loughrey and the Sisters of Mercy. After 1885 the school was operated by the Sisters of St. Mary. By 1885 plans were underway for a new church structure. Completed in 1892, it was named for Saint Patrick. The original Saint Stanislaus building became part of the school. After serving the parish for over three decades, it was removed between 1908 and 1909 to make way for a new parish rectory.