Frances Joan "Fran" Brill is a retired American actress and puppeteer, best known for her roles on Sesame Street and playing Lily Marvin in the Frank Oz film, What About Bob?. Brill was born in Chester, Pennsylvania, the daughter of Linette and Joseph M. Brill. Her father was a physician. She is a graduate of Boston University College of Fine Arts. She began her career in theater, making her Broadway debut in the 1969 play Red, White and Maddox. Her other theatrical roles include leads at the Roundabout Theatre, Manhattan Theater Club, Playwrights Horizons and many regional theaters including the Long Wharf, Yale Repertory Theatre, Arena Stage, the Mark Taper Forum and the Actors Theatre of Louisville. She has been nominated twice for a Drama Desk Award, for What Every Woman Knows and for Knuckle, respectively. From 1974-1975, Brill played Fran Bachman on NBC's daytime drama How to Survive a Marriage. Her character struggled with sudden widowhood, and Brill received over a thousand condolence letters. Brill was also featured in episodes of The Guiding Light, All My Children, The Edge of Night, Hyde in Hollywood, Lip Service and Kate and Allie. 

September 30th, 1946 in Chester (Age 78)