KURYAK - John M. Of Lackawanna, NY, January 31, 2021. Dearest father of John J. and Kimberly A. Kuryak; grandfather of Quintin (Samantha) Jacobs, Avery J. and Payton A. Kuryak; son of the late Joseph and Frances (Lis) Kuryak; brother of Michael (Kimberly), Joseph (late Andrea) and the late James Kuryak; also survived by nieces and nephews. No prior visitation. Private services. Mr. Kuryak was a U.S. Army veteran of the Vietnam War. Arrangements by: CASTIGLIA FUNERAL HOME, INC., (716) 824-6435, 873 Abbott Rd., South Buffalo, NY 14220. Please share your condolences at: www.CASTIGLIAFUNERALHOME.com