Michael Stephen Wilder, 80, of West Hartford, Conn., died May 18. He was the widower of Marjorie (Levitin) Wilder. Raised in New Haven, Conn., he was the son of the late Harry and Anne (Melin) Wilder. He is survived by his daughters, Kathryn Guarini and her husband Michael of Yorktown Heights, N.Y., and Amanda Wilder and her wife Camille of Albuquerque, N.M.; his companion Sandra Zieky of West Hartford; his sister Gail Wilder of Milford, Conn.; his nephew Harrison Squire and his wife Miranda Smith of Syosset, N.Y.; and his grandchildren, Emma, Matthew, Tyler, Elan, and Ida.