The Costillough 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 Costillough, 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 Costillough family
The surname Costillough 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 Costillough family
This web page shows only a small excerpt of our Costillough research.Another 275 words (20 lines of text) covering the years 1172, 1500, 1803 and 1865 are included under the topic Early Costillough History in all our PDF Extended History products and printed products wherever possible.
Costillough Spelling Variations
Medieval scribes and church officials spelled the names as they sounded, so a name was often spelled many different ways during the lifetime of a single person. The investigation of the origin of the name Costillough revealed many spelling variations
including Costello, MacCostello, Costillo, Costallo, Kostello, McCostello, Caustello, Costellow and many more.
Early Notables of the Costillough family (pre 1700)
More information is included under the topic Early Costillough Notables in all our PDF Extended History products
and printed products wherever possible.
Migration of the Costillough family to the New World and Oceana
During the middle of the 19th century, Irish families
often experienced extreme poverty and racial discrimination in their own homeland under English rule. Record numbers died of disease and starvation and many others, deciding against such a fate, boarded ships bound for North America. The largest influx of Irish settlers occurred with Great Potato Famine
of the late 1840s. Unfortunately, many of those Irish that arrived in Canada or the United States still experienced economic and racial discrimination. Although often maligned, these Irish people were essential to the rapid development of these countries because they provided the cheap labor required for the many canals, roads, railways, and other projects required for strong national infrastructures. Eventually the Irish went on to make contributions in the less backbreaking and more intellectual arenas of commerce, education, and the arts. Research early immigration and passenger lists revealed many early immigrants bearing the name Costillough: 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 Costillough 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.