Show ContentsDeacy History, Family Crest & Coats of Arms

The Irish name Deacy is an Anglicized version of the Gaelic name Déiseach, which is thought to have originally been a nickname for a member of the vassal community (feudal servants) called the Déis, a word of uncertain origin. There was also a Decies barony in County Waterford, and in some cases, this name likely originated with a native of that barony.

Early Origins of the Deacy family

The surname Deacy was first found in counties Cork and Mayo (Irish: Maigh Eo) located on the West coast of the Republic of Ireland in the province of Connacht. It is thought that immigrants from Waterford took on this name after they arrived in their new homelands.

The first recorded instance of the name appears to be a bearer of Dacy, who was a Drogheda juror in Cork as early as 1313. There is a legend in Cork that all the Deasys of the county are ancestors of a child who was rescued from a massacre in the barony of Decies in about 1620. It is claimed that he was then protected by the O'Donovans of the Island, and went on to have seven sons.

Early History of the Deacy family

This web page shows only a small excerpt of our Deacy research. Another 43 words (3 lines of text) covering the years 1568, 1622, 1652, 1659, 1750, 1774, 1793, 1798, 1812, 1819 and 1883 are included under the topic Early Deacy History in all our PDF Extended History products and printed products wherever possible.

Deacy Spelling Variations

Spelling variations of this family name include: Deasy, Deacy, Dacy, Dacey, Dease, Daase, Dece and others.

Early Notables of the Deacy family

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


United States Deacy migration to the United States +

Some of the first settlers of this family name were:

Deacy Settlers in United States in the 19th Century
  • Jeremiah Deacy, who landed in Washington County, Pennsylvania in 1856 1

Contemporary Notables of the name Deacy (post 1700) +

  • John J. Deacy, American Democratic Party politician, Delegate to Democratic National Convention from Massachusetts, 1944 2


  1. Filby, P. William, Meyer, Mary K., Passenger and immigration lists index : a guide to published arrival records of about 500,000 passengers who came to the United States and Canada in the seventeenth, eighteenth, and nineteenth centuries. 1982-1985 Cumulated Supplements in Four Volumes Detroit, Mich. : Gale Research Co., 1985, Print (ISBN 0-8103-1795-8)
  2. The Political Graveyard: Alphabetical Name Index. (Retrieved 2016, January 12) . Retrieved from http://politicalgraveyard.com/alpha/index.html


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