The Costellow surname came to Ireland
with the Anglo- Norman invasion
of the 12th century. They were originally from the Norman family Nangles, or de Angulos, and descended in Ireland
from Gilbert de Nangle. Costello and associated variations come from the personal name
of a son of Gilbert, Oisdealbhach, whose name consists of the elements "os," which means "deer or fawn", and "dealbhadh," which means "in the form of" or "resembling." The Gaelic form of the surname Costellow, which predated the Anglicized version of the name, is Mac Oisdealbhaigh. This is the earliest recorded example of a Norman family assuming a Mac surname. The prefix O has sometimes been erroneously assumed.
Early Origins of the Costellow family
The surname Costellow was first found in County Mayo
(Irish: Maigh Eo) located on the West coast of the Republic of Ireland
in the province of Connacht
, where they were granted lands by the Earl of Pembroke in the Anglo- Norman invasion
Early History of the Costellow family
This web page shows only a small excerpt of our Costellow research.Another 275 words (20 lines of text) covering the years 1172, 1500, 1803 and 1865 are included under the topic Early Costellow History in all our PDF Extended History products and printed products wherever possible.
Costellow Spelling Variations
Church officials and medieval scribes spelled names as they sounded; therefore, single person, could have his name spelt many different ways during their lifetime. While investigating the origins of the name Costellow, many spelling variations
were encountered, including: Costello, MacCostello, Costillo, Costallo, Kostello, McCostello, Caustello, Costellow and many more.
Early Notables of the Costellow family (pre 1700)
More information is included under the topic Early Costellow Notables in all our PDF Extended History products
and printed products wherever possible.
Migration of the Costellow family to the New World and Oceana
went through one of the most devastating periods in its history with the arrival of the Great Potato Famine
of the 1840s. Many also lost their lives from typhus, fever and dysentery. And poverty was the general rule as tenant
farmers were often evicted because they could not pay the high rents. Emigration to North America gave hundreds of families a chance at a life where work, freedom, and land ownership were all possible. For those who made the long journey, it meant hope and survival. The Irish emigration to British North America and the United States opened up the gates of industry, commerce, education and the arts. Early immigration and passenger lists have shown many Irish people bearing the name Costellow: Honor Costello who landed in America in 1756; Bernard, Cornelius, Edward, Hugh, J.B. James, John, John B. Lawrence, Mark, Michael, Neal, Patrick, Peter, Philip, Thomas, Timothy, and William Costello, all landed in Philadelphia, Pennsylvania between 1833 and 1874.
The Costellow Motto
The motto was originally a war cry or slogan. Mottoes first began to be shown with arms in the 14th and 15th centuries, but were not in general use until the 17th century. Thus the oldest coats of arms generally do not include a motto. Mottoes seldom form part of the grant of arms: Under most heraldic authorities, a motto is an optional component of the coat of arms, and can be added to or changed at will; many families have chosen not to display a motto.
Motto: Ne te quaesiveris extra
Motto Translation: Seek nothing beyond your sphere.