Dacy History, Family Crest & Coats of Arms

The Irish name Dacy 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 Dacy family

The surname Dacy 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 Dacy family

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

Dacy Spelling Variations

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

Early Notables of the Dacy family (pre 1700)

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

Migration of the Dacy family

Some of the first settlers of this family name or some of its variants were: Catherine Deasy, who arrived at St. John, New Brunswick in 1834; Martin Deasy, whose Oath of Allegiance was recorded in Philadelphia in 1835; Michael Deasy, who died on route to Quebec or at Grosse Isle in 1847.


Contemporary Notables of the name Dacy (post 1700) +

  • Scott Constantine "S.C." Dacy, American actor, writer, producer, and publicist who co-founded Adventuress Productions in 1989, known for for his work on Crosscurrent, Saturn Awards and Murder by Decree (1979)
  • George L. Dacy, American politician, Representative from Massachusetts 4th District, 1890 [1]


  1. ^ The Political Graveyard: Alphabetical Name Index. (Retrieved 2015, November 12) . Retrieved from http://politicalgraveyard.com/alpha/index.html


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