Irish Names, Surnames Names, African American Names, Norman Names, Gaelic Names, Sports Names, Musical Names, Comedian Names

English speaking countries

Is a common Irish surname originating in County Mayo. Costello in this form is an anglicization of Mac Oisdealbhaigh, which means "son of Oisdealbhaigh". Oisdealbhaigh is thought to come from the elements "os", meaning fawn, and "dealbh" which denotes "resemblance". It also could have been brought to the Gaelic country from the Normans.

Many Italian immigrants likely with the surname of Costa, Costella, Castiglia or Costelli adopted or took the name "Costello" when coming to America. Costello is rarely found in Italy. You will instead find the aforementioned there.

Rarely given as a first name, it occurs as a surname most often. Famous bearers include Abbott and Costello comedy duo member Lou Costello, singer/musician Elvis Costello, mobster Frank Costello and American boxer Billy Costello.