Show ContentsMcCostigant 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 McCostigant is Mac Oistigin which is probably derived from the pet form of the English name Roger, which is Hodgkin. 1

Early Origins of the McCostigant family

The surname McCostigant 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 McCostigant family

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

McCostigant Spelling Variations

Numerous spelling variations of the surname McCostigant exist. A partial explanation for these variants is that ancient scribes and church officials recorded names as they were pronounced, often resulting in a single person being recorded under several different spellings. Different spellings that were found include Costigan, Costigen, Costigin, McCostigan and others.

Early Notables of the McCostigant family

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

Migration of the McCostigant family

The 19th century saw a great wave of Irish migrating out of their homeland in a great measure due to the oppressive imperial policies of the English government and landowners. Many of these Irish families sailed to North America aboard overcrowded passenger ships. By far, the largest influx of Irish immigrants to North America occurred with Great Potato Famine during the late 1840s. These particular immigrants were instrumental in creation of the United States and Canada as major industrial nations because the many essential elements such as the roadways, canals, bridges, and railways required an enormous quantity of cheap labor, which these poor immigrants provided. Later generations of Irish in these countries also went on to make valuable contributions in such fields as the arts, commerce, politics, and education. Extensive research into immigration and passenger lists has revealed many early immigrants bearing the name McCostigant: 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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