Theodosia Monson, Baroness Monson

Theodosia Monson, Baroness Monson of Burton (née Blacker; 23 July 1803, in Warkworth, Northumberland – 3 July 1891, in Malvern Wells, Worcestershire) was a promoter of women's rights, horsewoman, atheist and landscape painter.

[2] Theodosia Blacker was born on 23 July 1803 at Warkworth, Northumberland, the fifth and youngest daughter of Major Latham Blacker (1765–1846) of Drogheda, Ireland, and subsequently of Newent, Gloucestershire, and Catherine Maddison (1769–1823).

[1] Her paternal grandparents were Latham Blacker (c. 1711 – post 1765) and Martha Beaver (died 1802).

[6] In December 1859, Baroness Monson rented and furnished a building as a meeting place in central London for like-minded women, a counterpart to the gentlemen's clubs that were then so popular.

The circle of women known as the Langham Place group included, in addition to Lady Monson and Matilda Hays, Helen Blackburn, Emily Faithfull, Maria Rye, Emily Davies, and Jessie Boucherett.