Cavey is a surname of Irish origin, possibly an Anglicized form of Mac Daibhéid, the Irish Gaelic form of McDevitt. This means that the name originally denoted a follower or descendant of Dáibhí, the Irish form of David. As a surname, Cavey is relatively uncommon, ranking as the 28,001st most common surname in the United States according to the 2010 Census, which recorded 856 individuals with the name. The vast majority of these, 96.73%, identified as White. Historical Context The Irish clan system often gave rise to surnames starting with "Mac" (meaning "son of"), such as Mac Daibhéid. Over time, these names were often anglicized as families assimilated into English-speaking cultures. Like many Irish surnames, Cavey may have several variant spellings or anglicized forms. Meaning: Possibly an anglicized form of Mac Daibhéid, meaning "son of David." Origin: Irish. Type: Surname, patronymic. Usage regions: Ireland, United States.