Mary W. Somers (skipjack)

The Port Tobacco River is a tidal tributary of the Potomac River located in Charles County, Maryland in the United States. The river is approximately 4.2 miles (6.8 km) in length. Port Tobacco, the county seat of Charles County from 1658 to 1895, was an active port until that portion of the river became silted and unnavigable. When the railroad bypassed the town, business declined, and the county seat was moved to La Plata, Maryland.

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.

Cedar Grove is a historic home located near La Plata, Charles County, Maryland, United States. It is a three-part house in the late Federal style, and built about 1854 by Francis Boucher Franklin Burgess. The house consists of a 2+1⁄2-story main block with a two-part east wing, all of common bond brick construction. There are several outbuildings, including two large barns, a small cattle barn, and several sheds.Cedar Grove was listed on the National Register of Historic Places in 1979.

Chapel Point State Park is an undeveloped public recreation area located on the Port Tobacco River, a tributary of the Potomac, in Charles County, Maryland. The state park offers fishing and hunting. Adjacent to the park, St. Ignatius Church and cemetery, the oldest continuous Roman Catholic parish in the United States, offers a scenic river view.

Charles County is a county located in the U.S. state of Maryland. As of the 2020 census, the population was 166,617. The county seat is La Plata. The county was named for Charles Calvert (1637–1715), third Baron Baltimore. Charles County is part of the Washington metropolitan area and the Southern Maryland region.With a median household income of $103,678, Charles County is the 39th wealthiest county in the United States, and the highest-income county in the United States with a Black-majority population.

Welcome is an unincorporated community in Charles County, Maryland, United States. The designated zip code is 20693. It is located seven miles from La Plata on Maryland Route 6 West. The Goose Bay campground and marina are also located in Welcome. Rosemary Lawn, a plantation owned since the 18th century by the Barnes-Compton family, was listed on the National Register of Historic Places in 1992. The McConchie One-Room School was a segrated school for Black children that operated from 1912 to 1956 in Welcome. The school is now an exhibit at the Charles County Fairgrounds in La Plata.

Ellerslie is a historic home located at Port Tobacco, Charles County, Maryland, United States. It is a two-story frame house of basic Georgian styling, with two exterior chimneys at each end. It was possibly built as early as the mid 18th century, and was extensively altered and enlarged about 1790–1820. A porch was added in 1965. It is the birthplace of Daniel of St. Thomas Jenifer, a Founding Father of the United States and signer of the United States Constitution. Ellerslie was listed on the National Register of Historic Places in 1979.

Mount Air is a historic home located at Faulkner, Charles County, Maryland, United States. It was built in 1801, and is basically a regionally typical Federal style house with a three-story central block with complementary wings. The home has the only known boxwood garden in lower Southern Maryland of its dimensions and age to retain its original formal plan.Mount Air was listed on the National Register of Historic Places in 1978.

Retreat is a historic home located at Port Tobacco, Charles County, Maryland, United States. It is a one-story, clapboard-sheathed, frame house with a double chimney. The principal part of the house was built about 1770. Also located on the property is a frame, pyramid-roofed meathouse, dating from the early 19th century, and moved here from another historic property in the county known as "Brentland" in 1953. The home, approached by a private gravel road, is surrounded by cultivated fields, meadows, and woodland, preserving its original agricultural and rural setting. The house is one of the earliest known examples of the side-passage, two-room dwelling in Charles County. It is associated with Daniel of St. Thomas Jenifer and Daniel Jenifer.Retreat was listed on the National Register of Historic Places in 1988.

Rose Hill is a historic house built in the late 18th century near Port Tobacco in Charles County, Maryland, United States. It is a five-part, Georgian-style dwelling house. It has a two-story central block with gable ends. It was restored during the mid 20th century.Rose Hill was listed on the National Register of Historic Places in 1973.

Rosemary Lawn is a historic home and farm complex located at Welcome, Charles County, Maryland, United States. It is a rambling, two-story, frame farmhouse. The home is believed to be a largely rebuilt version of a house of similar size and configuration that was built between 1844 and 1847, when it was part of the estate of Barnes Compton inherited from his mother, Mary Key (Barnes) Compton (b. 1804 St. Mary's Co., MD -d. 17 JUL 1834, Charles Co., MD). As Barnes Compton was a minor until 1851, the plantation was managed by Wilson Compton, his paternal uncle and guardian, who added improvements such as the house. Most of the exterior and interior finishes of the existing house were constructed during the 1880-1920 period, after the plantation had been sold by the Compton family. Outbuildings include a frame, pyramid-roofed dairy; a frame, pyramid-roofed "cooler" built over elevated foundations enclosing a cellar chamber; and a timber-framed, pyramid-roofed smokehouse. The property is considered of historical significance because of the collection of buildings. It "embraces a singularly unique collection of historically and physically integrated agricultural buildings and domestic support structures, and constitutes the largest and best preserved collection of such buildings known to exist in their original setting in this region. In addition to the rarity of several of the buildings--notably the two dairies and the oldest granary--the manner in which each of the buildings was constructed to maximize its functional use, and their obviously carefully considered placement, is of exceptional interest and importance." Also on the property is a private cemetery of the Barnes/Compton family, who owned and occupied the property from at least 1783 until 1873. Rosemary Lawn was listed on the National Register of Historic Places in 1990.

Port Tobacco, officially Port Tobacco Village, is a town in Charles County, in southern Maryland, United States. The population was 13 at the 2010 census, making Port Tobacco the smallest incorporated town in Maryland.