Ronald C. Reinisch on January 27, 2020 of Mount Sinai, LI. Formerly of Port Jefferson, LI. Beloved husband of the late Mary Jo. Loving father of Stephanie Crispino and her husband James and Hope Reinisch. Cherished grandfather of Nicholas and Jonathan. Reposing at Casimir Funeral Home, 1001 Route 25A, Miller Place, LI. Visitation will be on Thursday, January 30th from 2-4 and 7-9 PM. Funeral Mass Friday at 10 AM at Infant Jesus R.C. Church, Port Jefferson, LI. Interment to follow at Sea View Cemetery.