Eileen Costello died in 1962.
Declan Costello died in 2011.
Les Costello died in 2002.
Patty Costello died in 2009.
Seamus Costello died in 1977.
Walter Costello died in 1917.
Carole Dekeijser died in 2008.
Carole Corbeil died in 2000.
Frederick H. Costello died in 1921.
Maurice Costello died on 1950-10-29.
Larry Costello died on 2001-12-13.
Dan Costello died on 1936-03-26.