First found in Merionethshire, where they were seated from very ancient times, some say well before the Norman Conquest and the arrival of Duke William at Hastings in 1066 A.D.

The Welsh migration to North America in the late 19th and early 20th centuries contributed greatly to its rapid development. These migrants were in search of land, work, and freedom. Those Welsh families that survived the long ocean journey were critical to the development of new industries and factories, and to the quick settlement of land. They also added to an ever-growing rich cultural heritage. A search of the immigration and passenger lists has shown a number of people bearing the name Cadogan: John Caddigan who settled in Boston Massachusetts, with his wife Julia and daughter in 1849. In Newfoundland, Edmond Cadigan settled in St. John's in 1802.

Motto Translated: He that envies is inferior.

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