Best remembered for her performances in Broadway productions of The Man from Toronto, Tommy, and Alice Sit-by-the-Fire, this early 20th-century entertainer also acted alongside Myrna Loy in the 1932 movie Thirteen Women.
In the mid 1920s, she was a member of the acclaimed Henry Jewett Players theater troupe in Boston, Massachusetts.
At the age of twenty-four, she committed suicide by leaping from the Hollywood sign.
Born in Wales to British parents, she spent her early years in London, England. In the late 1920s, she was briefly married to the American actor Robert Keith.
After a young Bette Davis watched Entwistle's performance in a stage production of Ibsen's The Wild Duck, Davis resolved to become an actress.