Gwendoline is a feminine given name, a variant of Gwendolen. . Notable people called Gwendoline. Gwendoline Maud Syrie Barnardo (1879–1955), a British interior decorator. Gwendoline Butler (1922-2013), an English writer of mystery fiction. Gwendoline Christie (born 1978), a British actress. Gwendoline Davies (1882–1951), a Welsh patron of the arts. Gwendoline Didier (born 1986), a French figure skater. Gwendoline Eastlake-Smith (1883–1941), a British tennis player. Gwendoline "Gwen" Harwood (1920–1995), an Australian poet.
https://en.wikipedia.org/wiki/Gwendoline