Mullin, John Joseph Sr. of East Islip (formally of Lloyd Harbor) succumbed to an illness on Saturday, February 4, 2023. Loving son of Thomas and Edna (nee Fennessy). Devoted father of his children with Ann Marie; Tracy (Stephen) Sempowich, Thomas Joseph Mullin, Kevin Joseph Mullin; and his son with Linda, John Joseph Mullin Jr. Cherished grandfather of Meaghan and Stephen. Dear brother of the late Carol (Robert) Bonnie, Thomas (Carol) Mullin, Daniel Mullin, and James (Lauretta) Mullin. John was a proud Veteran of The United States Army and always remained a devoted patriot. His entrepreneurial spirit and hard work ethic carried him through life while his quick wit and charm brought countless smiles and warm memories to all who loved him. In his children, the best of John remains. May his memory bring them peace, as there will never be another like him.