Show ContentsO'Costegand History, Family Crest & Coats of Arms

While the Anglicized versions of Irish names are familiar to most people, many Irish names have a long and proud Gaelic heritage that is often unknown. The original Gaelic form of the name O'Costegand is Mac Oistigin which is probably derived from the pet form of the English name Roger, which is Hodgkin. 1

Early Origins of the O'Costegand family

The surname O'Costegand was first found in Leix (Irish: Laois) formerly known as Queen's County, located in central Ireland, in Leinster Province, where they held a family seat from ancient times.

The family descend through the Fitzpatrick, Princes of Ossary, line and are listed 121st in that genealogy.

"Geoffrey Baccach: his son, had a brother named Ostagan: ("osda:" Irish a host; "gan" without), a quo "Clan Ostagain," Anglicised Costigan." 2

Early History of the O'Costegand family

This web page shows only a small excerpt of our O'Costegand research. Another 49 words (4 lines of text) covering the year 1039 is included under the topic Early O'Costegand History in all our PDF Extended History products and printed products wherever possible.

O'Costegand Spelling Variations

In the Middle Ages many people were recorded under different spellings each time their name was written down. Research on the O'Costegand family name revealed numerous spelling variations, including Costigan, Costigen, Costigin, McCostigan and others.

Early Notables of the O'Costegand family

More information is included under the topic Early O'Costegand Notables in all our PDF Extended History products and printed products wherever possible.

Migration of the O'Costegand family

A massive wave of Irish immigrants hit North America during the 19th century. Although many early Irish immigrants made a carefully planned decision to leave left Ireland for the promise of free land, by the 1840s immigrants were fleeing a famine stricken land in desperation. The condition of Ireland during the Great Potato Famine of the late 1840s can be attributed to a rapidly expanding population and English imperial policies. Those Irish families that arrived in North America were essential to its rapid social, industrial, and economic development. Passenger and immigration lists have revealed a number of early Irish immigrants bearing the name O'Costegand: Michael, James, Joseph, Lawrence, Patt, Thomas (three of this name), and William Costigan, who arrived in Philadelphia, Pennsylvania between 1850 and 1870.



  1. MacLysaght, Edward, Supplement to Irish Families. Baltimore: Genealogical Book Company, 1964. Print.
  2. O'Hart, John, Irish Pedigrees 5th Edition in 2 Volumes. Baltimore: Genealogical Publishing Company, 1976. Print. (ISBN 0-8063-0737-4)


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