Business, News Duffy Insurance acquires Charles A. Slee Insurance of Marblehead By Allysha Dunnigan | October 6, 2021 Share Tweet Share Duffy Insurance Agency has acquired the assets of the Charles A. Slee Insurance Agency of Marblehead, marking Duffy’s third acquisition in 2021. The Slee Agency is one of the oldest… You've reached your 5 free articles this month. Login Subscribe