Show ContentsO'Costafane 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'Costafane 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'Costafane family

The surname O'Costafane 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'Costafane family

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

O'Costafane Spelling Variations

Scribes and church officials, lacking today's standardized spelling rules, recorded names by how they were pronounced. This imprecise guide often led to the misleading result of one person's name being recorded under several different spellings. Numerous spelling variations of the surname O'Costafane are preserved in documents of the family history. The various spellings of the name that were found include Costigan, Costigen, Costigin, McCostigan and others.

Early Notables of the O'Costafane family

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

Migration of the O'Costafane 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'Costafane: 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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