McCaul

McCaul is a surname of Irish origin. It is an Anglicized form of the Gaelic Mac Cathail, meaning “son of Cathal.” The name is historically associated with families in Ulster and has since spread to other parts of Ireland and to Irish diaspora communities abroad.

Over time, bearers of the name emigrated to North America and other regions, where the surname is now found among descendants of Irish immigrants as well as in broader populations through intermarriage and migration. In the United States, the name is most common in areas with historic Irish settlement, reflecting waves of 19th- and 20th-century immigration.

Notable people with the surname include Michael T. McCaul (born 1963), an American politician who has served as a U.S. Representative from Texas since 2005. He chaired the House Committee on Homeland Security from 2013 to 2019. The surname is borne by individuals across various professions, including politics, law, and business, reflecting its long-standing presence in Irish and Irish-descended communities.