Show ContentsCasady History, Family Crest & Coats of Arms

Irish names tend to vary widely in their spelling and overall form. The original Gaelic form of the name Casady is Ó Casaide. 1

Early Origins of the Casady family

The surname Casady was first found in Fermanagh (Irish: Fear Manach) in the southwestern part of Northern Ireland, Province of Ulster, where the Irish sept claims direct descent from the Irish King Colla da Crioch who was banished from Ireland in 327. 2

Early History of the Casady family

This web page shows only a small excerpt of our Casady research. Another 96 words (7 lines of text) covering the years 1143 and 1740 are included under the topic Early Casady History in all our PDF Extended History products and printed products wherever possible.

Casady Spelling Variations

Before widespread literacy came to Ireland, a name was often recorded under several different variations during the life of its bearer. Accordingly, numerous spelling variations were revealed in the search for the origin of the name Casady family name. Variations found include Cassidy, Cassady, Cassiday, Cassedy, Cassedey and others.

Early Notables of the Casady family

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

Casady Ranking

In the United States, the name Casady is the 11,577th most popular surname with an estimated 2,487 people with that name. 3


United States Casady migration to the United States +

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 Casady:

Casady Settlers in United States in the 19th Century
  • Barnard Casady, who landed in New York in 1823 4

Contemporary Notables of the name Casady (post 1700) +

  • Simon Casady (1907-1995), American politician, Candidate for Mayor of San Diego, California, 1979
  • John C. Casady, American Democratic Party politician, Alternate Delegate to Democratic National Convention from Oklahoma, 1924


The Casady 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: Frangas non flectes
Motto Translation: Thou may'st break, but shalt not bend me.


  1. MacLysaght, Edward, Irish Families Their Names, Arms and Origins 4th Edition. Dublin: Irish Academic, 1982. Print. (ISBN 0-7165-2364-7)
  2. O'Hart, John, Irish Pedigrees 5th Edition in 2 Volumes. Baltimore: Genealogical Publishing Company, 1976. Print. (ISBN 0-8063-0737-4)
  3. "What are the 5,000 Most Common Last Names in the U.S.?". NameCensus.com, https://namecensus.com/last-names/
  4. 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)


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