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

Etymology of O'Kieran

What does the name O'Kieran mean?

Gaelic, otherwise known as Early Modern Irish, was used in Ireland from around the year 1200 until the 18th century. It is from this language that we found the first references to the name O'Kieran as Ó Ciarain or Mac Ciarain. These names are derived from the word "ciar," which means "black" or "dark brown." 1

Early Origins of the O'Kieran family

The surname O'Kieran was first found in County Mayo (Irish: Maigh Eo) located on the West coast of the Republic of Ireland in the province of Connacht, where they held a family seat from ancient times.

Early History of the O'Kieran family

This web page shows only a small excerpt of our O'Kieran research. Another 87 words (6 lines of text) are included under the topic Early O'Kieran History in all our PDF Extended History products and printed products wherever possible.

O'Kieran 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'Kieran family name revealed numerous spelling variations, including Kieran, O'Kieran, Keiran, Keighran, O'Keiran, Kerin and many more.

Early Notables of the O'Kieran family

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

Migration of the O'Kieran family

Thousands of Irish families left for North American shores in the 19th century. These people were searching for a life unencumbered with poverty, hunger, and racial discrimination. Many arrived to eventually find such conditions, but many others simply did not arrive: victims of the diseased, overcrowded ships in which they traveled to the New World. Those who lived to see North American shores were instrumental in the development of the growing nations of Canada and the United States. A thorough examination of passenger and immigration lists has disclosed evidence of many early immigrants of the name O'Kieran: James, Patrick and Thomas, who Keiran arrived in Philadelphia between 1840 and 1860; John and Thomas Kieran settled in Philadelphia between 1858 and 1868. In Newfoundland, William Kearon, from Tallon, Waterford county, Ireland, was married in St. John'.



The O'Kieran 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: Fidens et constans
Motto Translation: Stand firm on trust.


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


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