First found in county Carlow, where some of the name may have come from Anglicized versions of MacOrcachta, believed to be descended from Cathal, brother of Teige Mor, of the powerful O'Connors of Connacht. However, it is thought that the majority of this name in Ireland are of English (Norman) stock.

Many Irish Families left the English-controlled Ireland in the 19th century. Early immigrants were primarily after land and the opportunity of living a life entirely of their own fashioning. In the 1840s, this pattern of immigration changed as the Great Potato Famine struck Ireland. Hundreds of thousands left the diseased and starving island with little expectations but many hopes. By this time there was very little available land in the east, so many immigrants joined the movement for the western frontier lands, or settled in established urban centers. Irish immigrants not only made enormous contributions to the rapid development and population of North America, but they also brought with them a rich cultural heritage. Immigration and passenger ship lists show some important early immigrants bearing the name Garet: Adam Garrett, who arrived in Pennsylvania in 1779; Henry Garrett, who came to New York, NY in 1803; Edwin Garrett, who arrived in New York, NY in 1821.

Motto Translated: Always faithful.

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