The word "Connolly" typically refers to a specific person, namely Maureen Connolly. She was a famous tennis player from the United States. Here’s a simple explanation for new English learners:
Connolly (noun) – Referring to Maureen Connolly, an important tennis player who was the first woman to win the four major tennis championships in the same year (1953). These championships include the United States Open, the British Open (Wimbledon), the French Open, and the Australian Open.