O'Dealy History, Family Crest & Coats of Arms

The spelling and overall form of Irish names often vary considerably. The original Gaelic form of the name O'Dealy is O Dalaigh, from the word "dalach," which comes from "dail," which means "assembly."

Early Origins of the O'Dealy family

The surname O'Dealy was first found in the barony of Magheradernon, in County Westmeath and traditionally claim descent from Eanna Ceannselach (Ian Kinsella), King of Leinster. They became Chiefs of Muintir Bhaire in the south west of Cork, and later in the north west of the same county, largely in O'Keefe's country. A distinct sept was found in Desmond as early as 1165.

"Cuconnachta-na-Scoil O'Daly (or "Cuconnachta of the Schools") was the first of this family that assumed the surname." [1]

Early History of the O'Dealy family

This web page shows only a small excerpt of our O'Dealy research. Another 198 words (14 lines of text) covering the years 1139, 1680, 1600, 1595, 1662, 1595, 1583, 1617, 1595, 1665, 1638, 1721, 1574, 1614, 1902, 1976, 1955 and 1976 are included under the topic Early O'Dealy History in all our PDF Extended History products and printed products wherever possible.

O'Dealy Spelling Variations

The recording of names in Ireland in the Middle Ages was an inconsistent endeavor at best. The many regional dialects and the predominate illiteracy would have made common surnames appear unrelated to the scribes of the period. Research into the name O'Dealy revealed spelling variations, including Daly, Daley, Daylie, Dayley, Dalley, Dailey, Daily, Dailley, Dally, O'Daily, O'Daley and many more.

Early Notables of the O'Dealy family (pre 1700)

Notable amongst the family name at this time was Daniel O'Daly (1595-1662), Irish diplomat and historian. He was "a native of Kerry, born in 1595, was member of a branch of an Irish sept which took its name from an ancestor, Dalach, in the twelfth century. His family were among the adherents of the Earl of Desmond, who was attainted for having opposed the government of Queen Elizabeth in Ireland, and was killed there in 1583. " [2] Angus O'Daly (d. 1617), was the Irish...
Another 83 words (6 lines of text) are included under the topic Early O'Dealy Notables in all our PDF Extended History products and printed products wherever possible.

Migration of the O'Dealy family

Irish families began to immigrate to British North America and the United States in the 18th century, but the greatest influx of Irish immigrants came during the Great Potato Famine of the late 1840s. The earlier settlers came to North America after a great deal of consideration and by paying relatively high fees for their passage. These settlers were primarily drawn by the promise of land. Those later settlers that came during the 1840's were trying to escape the conditions of poverty, starvation, disease, and death that had stricken Ireland. Due to the enormity of their numbers and the late date of their arrival, these immigrants primarily became hired laborers instead of homesteading settlers like their predecessors. An exhaustive search of immigration and passenger lists has revealed many Irish immigrants North America bearing the name O'Dealy: the Widow Daley who settled in Canada in 1846.



The O'Dealy 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: Deo fidelis et Regi
Motto Translation: Loyal to God and king


  1. ^ O'Hart, John, Irish Pedigrees 5th Edition in 2 Volumes. Baltimore: Genealogical Publishing Company, 1976. Print. (ISBN 0-8063-0737-4)
  2. ^ Smith, George (ed), Dictionary of National Biography. London: Smith, Elder & Co., 1885-1900. Print


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