George Calvert (c. 1580-1632) First Lord Baltimore, 1625-32 Cecilius Calvert Leonard Calvert Philip Calvert (1605-75) (1606-47) (1626-82) Second Lord Baltimore, First Governor of Governor of 1632-75 Maryland, 1633-43 Maryland, 1660-1 Charles Calvert (1637-1715) Third Lord Baltimore, 1675-1715 Benedict Leonard Calvert Charles Calvert (1679-1715) (1680-1733/4) Fourth Lord Baltimore, Feb-Apr 1715 Governor of Maryland Charles Calvert, Benedict Leonard, Edward Henry, Cecilius (1699-1751) (1700-32) (1701-30) (1702-65) Fifth Lord Baltimore, 1715-51 Benedict Swingate Calvert (c.1724-88) m. Elizabeth Calvert (1730-98) Henri Joseph Stier m. Marie Louise Peeters Natural Son of Fifth Lord Baltimore (1743-1821) (1748-1804) Descendent of Peter Paul Rubens Rebecca, Anne, Elizabeth, Charles, John, Edward, Philip, Leonard, Cecilius, John, William, Ariana, Robert Isabelle Marie Charles Jean Julie Eleanor Calvert m. John Parke Custis (1768-1822) (1770-1848) (1773-80) son of Martha Washington m. J.M m. Marie van Havre and Daniel Parke Custis van Havre m. Eugenie van Ertborn George Calvert m. Rosalie Eugenia Stier (1768-1838) (1778-1821) Caroline Maria George Henry Marie Louise Rosalie Eugenia Charles Benedict Henry Marie Louise Julia Amelia (1800-42) (1803-89) (1804-1809) (1806-45) (1808-1864) (1810-20) (1812-13) (1814-88) (1816-20) m. Thomas Morris m. Elizabeth Steuart m. Charles Carter m. Charlotte Norris m. Richard Inherits Riversdale Stuart Note: In the historical literature, discrepancies exist concerning the children of Benedict Swingate Calvert (c.1724-88) and Elizabeth Calvert (1730-98). Many of their offspring died in infancy, childhood, or young adulthood. Benedict Swingate Calvert revised his will in 1780 and died in 1788. The will provides documentation of which Calvert children were alive in 1780. We consulted three histories for information on Calvert family genealogy: Margaret Law Calcott, Mistress of Riversdale: The Plantation Letters of Rosalie Stier Calvert, 1795-1821 (Baltimore: Johns Hopkins, 1991); John Bailey Nicklin “The Calvert Family,” in Effie Gwyn Bowie, Across the Years in Prince George's County: A Genealogical and Biographical History of Some Prince George's County, Maryland and Allied Families (Richmond: Garrett and Massie, 1947); and Anne E. Yentsch, A Chesapeake Family and Their Slaves: A Study in Historical Archaeology (Cambridge: Cambridge University Press, 1994). All three sources list eleven children of the children (Rebecca, Eleanor, Charles, George, Philip, Leonard, Cecilius, John, William, Ariana, and John). Only two of the three sources mention two additional children – Edward (Calcott and Nicklin) and Elizabeth (Yentsch and Nicklin). Only Yentsch mentions a fourteenth child, Anne. .