DEMPSEY, John W., age 90, of Plymouth, August 11 , 2012. Beloved husband of the late Winnifred. Dempsey. Loving father of Gary (Mary) Wencel, Ken Dempsey, Barbara Kaminski and Mary Dempsey Knox. Dearest grandfather of Randy, Keith, Shannon, Amy and great-grandfather of Kristen, John, Addison, Evelyn, Delano and Kurtis. He is also survived by his brothers Earl and Cedric. He was preceded in death by his sister Mary Lou Sullivan