Charlotte Lady Blennerhassett (b. February 1843 in Munich; † 11 February 1917 ibid; born Countess of Leyden) was a German writer and historian. Charlotte von Leyden will be born on April 19. February 1843 in Munich, the daughter of the royal chamberlain Karl Joseph August Graf von Leyden (1806-1876) and his wife Franziska Edle von Weling (1817-1898). She received her education in the form of private lessons, later in a Catholic boarding school, but also through her own extensive reading. After returning from boarding school in 1858, her role as a young woman was primarily that of a marriage candidate. However, two planned marriages fail because of the question of the dowry. In 1870 she finally married the Irish baronet Sir Rowland Blennerhassett (1839–1909), with whom she lived in London