parish was closed, many remaining St. Mary's families moved to these parishes. Our Lady of Mercy, Hazelwood, MO St. Blaise, St. Louis County, MO St. Gregory (the Great), St. Ann, MO (now Holy Trinity) St. Jude, St. Louis County, MO St. Kevin, St. Ann, MO (now Holy Trinity) St. Lawrence the Martyr, Bridgeton, MO St. William, Woodson Terrace, MO (now Holy Trinity) Parish mergers After the closure of St. Mary's, parishioners joined the parishes listed above that had developed from St. Mary's. Due to a declining number of Catholics in the northwest deanery and airport expansion, several parishes have combined. In 2003, St. Gregory, St. Kevin, and St. Williams merged. The new parish is called Holy Trinity. Holy Trinity's church, parish center, rectory, convent, and youth center is located at the former St. Gregory Parish on St. Luke Lane, and the school is located at the former St. Kevin Parish on St. Henry Lane. In 2004, St. Lawrence the Martyr was purchased as part of the St. Louis-Lambert Airport expansion as well. St. Lawrence the Martyr merged with St. Blaise to form Holy Spirit Parish in 2004. Holy Spirit is located at the former St. Blaise Parish on Parkwood Lane in Maryland Heights. The same week that St. Lawrence and St. Blaise merged, Our Lady of Mercy in Hazelwood closed, and its members joined St. Martin de Poerres in Hazelwood. St. Jude continues to operate. External links St. Mary's - Closed Catholic Parishes History of Missouri Churches in the Roman Catholic Archdiocese of St. Louis Religious organizations established in 1851 2001 disestablishments in Missouri Buildings and structures in St. Louis County, Missouri 1851 establishments in Missouri Former Roman Catholic church buildings in Missouri Demolished buildings and structures in Missouri Buildings and structures demolished in 2004