or Williamsa Henley. Mary's sister, Barbara, married Thomas Bladen a year later. Charles and Mary had three children: Frederick Calvert (6 February 1731 – 4 September 1771) who succeeded his father to become the 6th and final Lord Baltimore, but led a life of idleness, indulgence and scandal. Caroline Calvert, born ca. 1745, who on 26 April 1763 married Sir Robert Eden, 1st Baronet, of Maryland, the last colonial governor of Maryland. His rule was overthrown during the events of the American Revolution in 1774–6. Louisa Calvert, married John Browning. On the death of her brother Frederick in 1771, Louisa contested his will, arguing that she should inherit the proprietorship of Maryland, rather than Frederick's illegitimate son Henry Harford. Before the suit could be decided, Maryland was part of the independent United States of America. Charles also had an illegitimate son, Benedict Swingate Calvert, born in around 1730–32. His mother's identity is not clear but H. S. Lee Washington, writing in the New England Historic Genealogical Society Register in July 1950, suggests that she was Melusina von der Schulenburg, Countess of Walsingham. Melusina was the daughter of George I of Great Britain and his mistress, Melusine von der Schulenburg, Duchess of Kendal. Whatever the truth of this, it seems likely that Benedict's mother was a person of some consequence. According to a letter of Benedict's daughter-in-law Rosalie Stier Calvert dated 10 June 1814, his mother had been a woman "of the highest rank in England". In 1742, aged about ten or twelve years, the young Benedict was escorted to America and placed in the care of Dr. George H. Steuart, an Annapolis physician and a political ally of the Calverts. It appears Charles Calvert also had two illegitimate children by Cecil Mignon Bressan (b. 1717), daughter of Peter Bressan: Charles Cecil Bressan Calvert and Augustus Bressan Calvert. Woodcote Park Charles lived with his family at Woodcote Park in Epsom, Surrey, a grand estate originally built in the seventeenth century by Richard Evelyn, brother to John Evelyn the diarist. He made many changes to the house, though his brothers complained that he "pulled down everything" and "finished nothing". Death and legacy Charles died in 1751 and was succeeded by his eldest legitimate son, Frederick Calvert, 6th Baron Baltimore. Unlike his father, Frederick Calvert took little interest in politics, treating his estates, including Maryland, as mere sources of revenue to indulge his