Sport Celtics History: Birthdays & Debut – Simmons, Walker, Janisch & Clarke by Javier Moreno - Sports Editor March 15, 2026 by Javier Moreno - Sports Editor March 15, 2026 Remembering Connie Simmons: A Celtics Pioneer Today, March 15th, marks the birthday of Cornelius “Connie” Leo Simmons, a significant figure in the early days of the Boston Celtics and the … 0 FacebookTwitterPinterestEmail