Anna Maria Gaussen (d.1804)
Anna Maria Gaussen was the sister of the noted female evangelist Mary Bosanquet-Fletcher.
Gaussen was married to her cousin Peter Gaussen esq. She was resident in London and was also involved with the Methodists.
Source: Burke's Landed Gentry, volume 1 (1898) under Bosanquet, and Fletcher-Tooth collection (MARC)