O’Keefe, William J., of Cambridge, August 18, 2019 at age 61. Devoted son of the late Frances (Carbo) and William J. O’Keefe Sr. Beloved brother of Dorothy Ann Santos and her husband Richard Santos, Denise Connor and her husband Leo Connor, Donna Perry and her significant other Bob Comeau. Longtime companion of Patti Devin. Also survived by nieces, nephews, great-nieces and nephews, and many other loving relatives and friends. Visiting hours at the Rogers Funeral Home, 380 Cambridge St., in Cambridge on Thursday, August 22, 2019 from 2:00 pm to 4:00 pm with a prayer service at 3:45 pm .