Robert A. Williams, 90, died Sept. 6, 2005, at his home. He was born in Brooklyn, N.Y., and lived in Port St. Lucie for several years. Before retirement, he was a New York City firefighter. Survivors include daughters, Barbara Killane and Dorothy; sons, Robert Williams, Barry Williams and Alan Williams, 18 grandchildren; and 12 great-grandchildren. Memorial contributions may be made to Hospices of the Treasure Coast, 1201 S.E. Indian St., Stuart, FL 34997. SERVICES: Arrangements are by Aycock Funeral Home, Stuart