St. Thomas Manor | |
 St. Ignatius Church at St. Thomas Manor, September 2009 | |
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| Location | Maryland Route 427/Chapel Point Rd., Port Tobacco |
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| Coordinates | 38°27′56″N 77°1′25″W / 38.46556°N 77.02361°W |
| Area | 10.7 acres (4.3 ha) |
| Built | 1741 |
| Architectural style | Georgian |
| NRHP reference No. | 88002050[1] |
| Added to NRHP | November 10, 1988 |
St. Thomas Manor (1741) is a historic home and Catholic church complex located near Port Tobacco, Charles County, Maryland. Known as St. Ignatius Church and Cemetery, the manor house complex is the oldest continuously occupied Jesuit residence in the world. The mission settlement of Chapel Point was established in 1641 by Father Andrew White, S.J., an English Jesuit missionary. Father White ministered to the Potapoco Native Americans, some of whom he converted to Catholicism. Established in 1662, this is the oldest continuously active Roman Catholic parish in the American Thirteen Colonies. With the consecration in 1794 of Bishop John Carroll, St. Thomas became the first Roman Catholic see in the United States.