Ellen Albertini Dow

Ellen Rose Albertini Dow (November 16, 1913 – May 4, 2015) was an American character actress. She mainly played feisty old ladies and is perhaps best known as the rapping grandmother in 1998 movie "The Wedding Singer". Other roles include the homophobic grandmother in "Wedding Crashers", Disco Dottie in "54", the recipient of Christopher Lloyd's slapstick in "Radioland Murders", and a choir member in "Sister Act".
Dow was born on November 16, 1913 in Mount Carmel, Pennsylvania. She studied at Cornell University. Dow was married to Eugene Dow from 1951 until his death in 2004. They had no children. 
Dow died on May 4, 2015 at her Los Angeles, California home, at age 101.