McCauley is a surname of Irish origin that means "son of Colla." It is believed to have originated from the ancient Gaelic O' Collaigh clan in Ireland. The name McCauley is commonly found in places with strong Irish heritage, such as Ireland, Scotland, England, and the United States. Those with the surname McCauley are often described as being strong-willed, loyal, and family-oriented individuals. The name has a long history and is passed down through generations, carrying with it a sense of pride and tradition.