SIENER - Dennis J. October 2, 1958 - October 5, 2025 Of South Wales, NY. Beloved husband of Kathryn A. (Blake) Siener; dearest father of Danielle Sodaro, Nicole D'Andrea, Jacob Siener, Owen Siener, Ian Siener, Daniel Anderson, David Farrell and Christina Podesta; grandfather of Joseph, Jillian and Ava; great-grandfather of Jayde; loving son of the late John J. and Mary T. (Walters) Siener; brother of John (Kathleen) Siener, Beverly (late Michael) Ball and the late Marybeth (Clifford) Larivey, William (Bobby Jo) Siener and Richard (Lynn) Siener; also survived by nieces and nephews. Family and friends will be present Saturday, October 11, 2025 from 3-6 PM for a Celebration of Life Gathering at the CASTIGLIA FUNERAL HOME, INC., 873 Abbott Rd., South Buffalo, NY, (716) 824-6435, where a Funeral Service will be held at 5:30 PM. Please share your condolences at: www.castigliafuneralhome.com