Jost, William E., of Stony Brook, NY, on May 6, 2012. Retired Islip H.S. Teacher, and Suffolk Community College Professor. Involved in D.E.C.A., Three Village Little Leagues, and Scouting. Beloved husband of the late Diana. Loving father of Scott and his girlfriend Mary, Todd and his wife Kari, and Gregg and his wife Rikki. Cherished grandpa of Diana, Deirdre, Kylie, William, Samson, and Isaac. Beloved brother of Dorothy Cunningham and Jean Shane. Reposing at Casimir Funeral Home, 4839 Nesconset Highway, (Route 347) Port Jefferson Station, NY. Visitation Wednesday 2 - 4 & 7 - 9pm. Funeral service 10:30 AM Thursday. Interment at Washington Memorial Park, Mt. Sinai, NY. In lieu of flowers, donations in William's name made to Day Haven Adult Day Services, Attn: Ethel Thomas, 400 Sheep Pasture Rd, Port Jefferson, NY 11777.