Costello
Costello is a surname of Italian origin used in several countries. It is a toponymic name derived from places named Costello or Castello, from the Italian word castello meaning “castle.” The name is also found in Ireland and among Irish- and British-descended populations, reflecting historical migration patterns.
The best known bearer is Elvis Costello, stage name of Declan Patrick MacManus (born 1954 in London).
Beyond Elvis Costello, the surname has been carried by various public figures in sports, arts, and politics,