Gustat, H. William (“Bill”) of Boston and formerly of Chelsea on June 25. Beloved partner of Mark Alpert. Loving son of Samuel M. and Anna Gustat. Dear brother of Edward Gustat and his wife Irene and Teri Mae Gustat. Loving uncle of Michael Gustat & his wife Rachel and Joy Shapiro & her husband Jason. Great uncle of Sam and Abby Gustat and Ellie Shapiro. Graveside services are private. Contributions in his memory may be made to Temple Emmanuel of Chelsea, 60 Tudor St., Chelsea, MA 02150 or to a charity of your choice.