Frederick P. Dannhauser, 80, of Windsor, formerly of Simsbury, died March 30. He is survived by his wife Harriet (Mandell) Danhauser. Born in Hartford, he was the son of the late Joseph and Lillian (Sugarman) Dannhauser. In addition to his wife, he is survived by his children, Robin Lazinsk and her husband Adam of Avon, Eric Dannhauser and his wife Missy of West Hartford, and Lisa Dannhauser of New Haven; his grandchildren, Morgan, Brenna and Callie Dannhauser, and Jordan and Sarah Lazinsk; his sister Iris Schlank of Manchester; and his nephew Rick Diamond of Newington.