About Costello
The surname Costello is of Irish origin and is derived from the Gaelic name "Mac Oisdealbhaigh," meaning "son of Oisdealbhach." The name Oisdealbhach is composed of the elements "os," meaning "deer," and "dealbhach," meaning "like." Therefore, the surname Costello can be interpreted to mean "son of the deer-like one." It is a relatively common surname in Ireland and is associated with County Mayo in particular.
The surname Costello is a unique entry in our records. Discover more about its distribution and characteristics:
Below is the ethnic distribution of the surname Costello based on recent US Census records. This is a brief glimpse into the diverse backgrounds of people carrying this surname.
Ranking information for the surname Costello is not currently available.
Here's how to represent Costello in Braille, each pattern of raised dots corresponds to a letter in the name.
The image below shows how you can spell Costello using American Sign Language (ASL). In sign language, each hand shape corresponds to a specific a letter of the name.