About Cass Elliot
Ellen Naomi Cohen, known professionally by the stage name Cass Elliot, was an American singer-songwriter, comedian, actress, and television personality. A member of the singing group The Mamas & the Papas (1965–68), she was also known as "Mama Cass", a name she stated she disliked. After the group broke up, Elliot released five solo albums. She received the Grammy Award for Best Contemporary (R&R) Performance for "Monday, Monday" (1967). In 1998, she was posthumously inducted into the Rock and Roll Hall of Fame for her work with The Mamas & the Papas. Elliot's first recording with the Big 3 was "Winken, Blinken, and Nod", released by FM Records in 1963. She won a small part in the play The Boy Friend, a summer stock production at the Hilltop Theatre in Owings Mills, Maryland. In the meantime, Yanovsky and John Sebastian co-founded the Lovin' Spoonful, while Doherty joined the New Journeymen, a group that also included John Phillips and his wife Michelle Phillips. Elliot had a brother, Joseph, and a younger sister, Leah, who also became a singer and recording artist.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.