Show ContentsO'Costafent 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'Costafent 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'Costafent family

The surname O'Costafent 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'Costafent family

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

O'Costafent Spelling Variations

The archives that survive today demonstrate the difficulty experienced by the scribes of this period in their attempts to record these names in writing. Spelling variations of the name O'Costafent dating from that time include Costigan, Costigen, Costigin, McCostigan and others.

Early Notables of the O'Costafent family

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

Migration of the O'Costafent family

Thousands of Irish left in their homeland in the 18th and 19th centuries to escape the religious and political discrimination they experienced primarily at the hands of the English, and in the search of a plot of land to call their own. These immigrants arrived at the eastern shores of North America, early on settling and breaking the land, and, later, building the bridges, canals, and railroads essential to the emerging nations of United States and Canada. Many others would toil for low wages in the dangerous factories of the day. Although there had been a steady migration of Irish to North America over these years, the greatest influx of Irish immigrants came to North America during the Great Potato Famine of the late 1840s. Early North American immigration records have revealed a number of people bearing the Irish name O'Costafent or a variant listed above: 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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