John Patrick Greehy, 27, of Centereach, on July 10, 2017. Survived by his beloved girlfriend Kaitlin Foster; his loving parents Susan and John Greehy. Cherished brother to Keriann Greehy and Sean Greehy; Devoted uncle to Kaiden. Loving grandson to Maurice and Carol Greehy; and Gloria and Eugene Hearl. Reposing at O. B. Davis Funeral Homes, 4839 Nesconset Highway, Port Jefferson Station, NY, 11776 on Thursday from 7-9 p.m. & on Friday from 2-4 p.m. & 7-9 p.m. Funeral Service Saturday at 10 a.m. Committal Service and Cremation to follow at Washington Memorial Park.