Cassion History, Family Crest & Coats of Arms

The Cassion surname comes from the Irish Gaelic Mac Caisín, or O Caisín.

Early Origins of the Cassion family

The surname Cassion was first found in Munster, where they held a family seat as Chiefs of the Dalcassian race. Irish history, after the Norman Conquest of England, was strongly influenced by the invasion of Strongbow in 1172. Many Irish clanns, sept names were intermixed and family groupings became almost indistinguishable.

Important Dates for the Cassion family

This web page shows only a small excerpt of our Cassion research. Another 124 words (9 lines of text) covering the years 1640, 1666, and 1667 are included under the topic Early Cassion History in all our PDF Extended History products and printed products wherever possible.

Cassion Spelling Variations

Spelling variations of this family name include: McCashin, McCashen, O'Cashin, O'Cashen, O'Casheon, Cashion, Cashin, Cashon, Cassin, Cassion, McCashion, Mccashney, McCashon, McKasshine, Keshin, Casheen, Casain, Kasain, McCassin and many more.

Early Notables of the Cassion family (pre 1700)

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

Migration of the Cassion family

Some of the first settlers of this family name or some of its variants were: Henry McCashland, who settled in America in 1737; Dennis McCashin, who arrived at Halifax, N.S. in 1798; Patrick McCashin, who arrived in Pennsylvania in 1805.

Contemporary Notables of the name Cassion (post 1700)

  • John Cassion, American Democrat politician, Alternate Delegate to Democratic National Convention from Connecticut, 1932 [1]


  1. ^ The Political Graveyard: Alphabetical Name Index. (Retrieved 2015, October 9) . Retrieved from
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