Origin of the Name Costello
family history was found in the allfamilycrests.com archives.
Over the centuries Surnames developed a wide number of variants. Different spellings of the same name can be traced back to an original root. Additionally when a bearer of a name emigrated it was not uncommon that their original name would be incorrectly transcribed in the record books at their new location. Surnames were also often altered over the years based on how they sounded phonetically and depending on the prevailing political conditions it may have been advantageous to change a name from one language to another.
Variants of the name Costello
include Nangle, Costley, Cushely, Casserley, Costelloe and Costellow. The Costellos were originally Nangles, or de Angulos, as that great Norman family was called when, soon after the invasion of 1172 the Anglo-Normans occupied Connaught. Their lands were in County Mayo, in the barony of Costello in the east of that County, which was named for the MacCostellos who possessed it up to the end of the sixteenth century. In 1565 their chief seat was near Ballaghadereen, which is now part of County Roscommon. The Costellos were one of the many great Irish families which, in the ruin of the seventeenth century destruction of the Gaelic order, produced many famous soldiers known as 'rapparees'.
The Costello coat of arms came into existence centuries ago. The process of creating coats of arms (also often called family crests) began in the eleventh century although a form of Proto-Heraldry may have existed in some countries prior to this. The new art of Heraldry made it possible for families and even individual family members to have their very own coat of arms, including all Costello descendants.