Connolly is a Gaelic surname that originated in Ireland. It is derived from the Gaelic O Conghalaigh, meaning "descendant of Conghalach," a personal name meaning "fierce warrior." People with the surname Connolly are often known for their strong and determined personalities. They are often seen as natural leaders and are known for their loyalty to their family and friends. The name Connolly carries a sense of tradition and heritage, symbolizing a deep connection to Irish culture and history.