Declan Costello   (m)  
Fictional Characters from Television   1994   Heartbreak High
Dolores Costello   (f)   1903-1979  
Notable Actors and Entertainers   (actor)
Elvis Costello   (m)   1954-  
Notable Musicians
Rock and Roll Hall-of-Famers   2003   Elvis Costello & the Attractions
John A. Costello   (m)   1891-1976  
Irish Presidents and Prime Ministers   1948-1951; 1954-1957   (prime minister)
Larry Costello   (f)   1931-2001  
Hall-of-Famers   2022   (basketball)