MacCostello Coat of Arms and Surname Origin

There is no single MacCostello family crest for every bearer. Herald Lab researches the arms historically associated with the name and explains whose they were.

Meaning of the name

Some records give Costello; others give MacCostello. Both point to the same Irish family name. The name is generally explained as “Son of Oisdealb”.

Spelling and variants

The Mac in front of the name is a particle that was often added to Costello in records. The same family of names includes Costelloe and Costelo.

Want more than a summary? See the MacCostello family name pack.