Marthe Flandrin

Marthe Flandrin (1904-1987) was a French artist and painter, specializing in frescos, as at Saint-Hilaire-du-Harcouët, but also producing designs for mosaics and tapestries, such as her 1962 ceiling mosaics for Notre-Dame de la Trinité Basilica in Blois. She was the daughter of the architect Joseph Flandrin (1857-1939) and the artist Jeanne Train (1864-1947). Both her parents were from artistic families - Joseph's father was the painter Paul Flandrin.

...
Wikipedia