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

Hundreds of years ago, the Gaelic name used by the O'Dun family in Ireland was Ó Duinn or Ó Doinn. Both Gaelic names are derived from the Gaelic word donn, which means brown. Ó Doinn is the genitive case of donn. 1

Early Origins of the O'Dun family

The surname O'Dun was first found in County Meath (Irish: An Mhí) anciently part of the kingdom of Brega, located in Eastern Ireland, in the province of Leinster. The family was descended from O'Rigain one of the ancient "Four Tribes of Tara" in the Kingdom of Meath, now the county of Meath. The Kings of Meath in turn traced their regal history back to the Heremon Kings.

Early History of the O'Dun family

This web page shows only a small excerpt of our O'Dun research. Another 291 words (21 lines of text) covering the years 1180, 1268, 1642, 1651, 1691, 1692, 1695, 1700, 1713, 1733 and 1758 are included under the topic Early O'Dun History in all our PDF Extended History products and printed products wherever possible.

O'Dun Spelling Variations

Those scribes in Ireland during the Middle Ages recorded names as they sounded. Consequently, in this era many people were recorded under different spellings each time their name was written down. Research on the O'Dun family name revealed numerous spelling variations, including Dunn, Dunne, Dun, O'Dunne, O'Doyne, Doine, Doin, O'Dunn and many more.

Early Notables of the O'Dun family

Another 47 words (3 lines of text) are included under the topic Early O'Dun Notables in all our PDF Extended History products and printed products wherever possible.

Migration of the O'Dun family

During the 19th century thousands of impoverished Irish families made the long journey to British North America and the United States. These people were leaving a land that had become beset with poverty, lack of opportunity, and hunger. In North America, they hoped to find land, work, and political and religious freedoms. Although the majority of the immigrants that survived the long sea passage did make these discoveries, it was not without much perseverance and hard work: by the mid-19th century land suitable for agriculture was short supply, especially in British North America, in the east; the work available was generally low paying and physically taxing construction or factory work; and the English stereotypes concerning the Irish, although less frequent and vehement, were, nevertheless, present in the land of freedom, liberty, and equality for all men. The largest influx of Irish settlers occurred with Great Potato Famine during the late 1840s. Research into passenger and immigration lists has brought forth evidence of the early members of the O'Dun family in North America: Thomas Dunn who settled in Wymouth, Massachusetts in 1647; Miss Dunn settled in Barbados in 1774; Mrs. Dunn settled in Boston Massachusetts in 1766; Agnes Dunn settled in Charles Town [Charleston], South Carolina in 1767.



The O'Dun 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: Mullach a-bu
Motto Translation: Victory for the Dunns.


  1. MacLysaght, Edward, The Surnames of Ireland. Ireland: Irish Academic Press, sixth edition, 1985. Print. (ISBN 0-7165-2366-3)


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