Background
Her father was Thomas Thornycroft (1815–1885) and her mother, Mary Francis (1814–1895).
Her father was Thomas Thornycroft (1815–1885) and her mother, Mary Francis (1814–1895).
A gifted artist, she exhibited her paintings at the Royal Academy of Arts in London before she turned twenty-two. Because she was Anglo-Catholic, he was disinherited by the Sassoon family for marrying her. They had three sons:
Michael Thornycroft Sassoon (1884–1969).
Siegfried Sassoon (1886–1967).
Hamo Watts Sassoon (1887–1915).
Theresa was a member of the Thornycroft family.