Show ContentsOcasio 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 Ocasio is Ó Casaide. 1

Early Origins of the Ocasio family

The surname Ocasio 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 Ocasio family

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

Ocasio Spelling Variations

Irish names were rarely spelled consistently in the Middle Ages. Spelling variations of the name Ocasio dating from that time include Cassidy, Cassady, Cassiday, Cassedy, Cassedey and others.

Early Notables of the Ocasio family

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

Ocasio Ranking

In the United States, the name Ocasio is the 3,384th most popular surname with an estimated 9,948 people with that name. 3

Migration of the Ocasio family

To escape the religious and political discrimination they experienced primarily at the hands of the English, thousands of Irish left their homeland in the 19th century. These migrants typically settled in communities throughout the East Coast of North America, but also joined the wagon trains moving out to the Midwest. Ironically, when the American War of Independence began, many Irish settlers took the side of England, and at the war's conclusion moved north to Canada. These United Empire Loyalists, were granted land along the St. Lawrence River and the Niagara Peninsula. Other Irish immigrants settled in Newfoundland, the Ottawa Valley, New Brunswick and Nova Scotia. The greatest influx of Irish immigrants, however, came to North America during the Great Potato Famine of the late 1840s. Thousands left Ireland at this time for North America and Australia. Many of those numbers, however, did not live through the long sea passage. These Irish settlers to North America were immediately put to work building railroads, coal mines, bridges, and canals. Irish settlers made an inestimable contribution to the building of the New World. Early North American immigration records have revealed a number of people bearing the Irish name Ocasio or a variant listed above, including: Patrick Cassidy who settled in Rhode Island, and later moved to Norwich in Connecticut, where he became one of America's first surgeons. Edward, Hugh, James, John, Patrick, Thomas and William Cassady who all arrived in Philadelphia between 1840 and 1865.


Contemporary Notables of the name Ocasio (post 1700) +

  • Ramon Ocasio (b. 1962), American judge of the 6th Judicial Subcircuit in Cook County
  • Billy Ocasio, senior advisor to Illinois Governor Pat Quinn
  • Benito Antonio Martínez Ocasio (b. 1994), known by his stage name Bad Bunny, is a Puerto Rican rapper, singer, and songwriter. In 2021 he won a Grammy Award for Best Latin Pop or Urban Album. In 2021, he began making guest appearances in the professional wrestling promotion WWE, where he is a one-time WWE 24/7 Champion
  • Daisy Ocasio (b. 1964), well known Puerto Rican athlete
  • Karina Ocasio (b. 1985), Puerto Rican volleyball player
  • Osvaldo "Ossie" Ocasio (b. 1955), Puerto Rican former boxer and world Cruiserweight champion

Arrow Air Flight 1285
  • Mr. Francisco Jr Ocasio (1961-1985), American Sergeant from Juana Diaz, Puerto Rico, USA who died in the Arrow Air Flight 1285 crash 4


The Ocasio 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. American War Memorials - Flight 1285. (Retrieved 2016, August 24) . Retrieved from http://www.uswarmemorials.org/html/monument_details.php?SiteID=317&MemID=550


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