First found in the county of Yorkshire, where they had been settled from very ancient times before the Norman Conquest by Duke William of Normandy in 1066 A.D.

Irish immigration to North American began in the late 18th century as many Irish Families desired to own their own land. This pattern of immigration grew slowly yet steadily until the 1840s. At that time, a failed crop and a growing population in Ireland resulted in the Great Potato Famine. Poverty, disease, and starvation ravaged the land. To ease their pain and suffering the Irish often looked upon North America as a solution: hundreds of thousands undertook the voyage. Their arrival meant the growth of industry and commerce for British North America and the United States. For the individual Irishman, it meant survival and hope, and the opportunity for work, freedom, and ownership of land. The early immigration and passenger lists revealed many bearing the name Barrett: Henry Barrett who settled in Virginia in 1652; Francis Barrett in Virginia in 1653; Patrick Barrett settled in Philadelphia, Pennsylvania, in 1789. In Newfoundland, John, of Poole, Dorset, England, settled in Bread and Cheese Cove, around 1728.

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