Hannah Gluckstein, Painter (1895-1978)
Wikipedia

Gluck was born into a wealthy Jewish family in London. Gluck attended St. John's Wood School of Art between 1913 and 1916 before moving to west Cornwall and joining the artists' colony there.  In the 1920s and 30s Gluck became known for portraits and floral paintings. Gluck insisted on being known only as Gluck, "no prefix, suffix, or quotes", and when an art society of which she was vice president identified Gluck as "Miss Gluck" on its letterhead, Gluck resigned. Gluck identified with no artistic school or movement and showed her work only in solo exhibitions, where it was displayed in a special frame Gluck invented and patented. This Gluck-frame rose from the wall in three tiers; painted or papered to match the wall on which it hung, it made the artist's paintings look like part of the architecture of the room.  This self-portrait is an accurate representation of her looks.