GRIMALDI, William J., Sr. on February 12, 2019 of Hauppauge, New York. Beloved husband of the late Jean Grimaldi. Loving father of William J. Grimaldi, Jr. and Jean H. Costa. Cherished grandfather of Frank and Elizabeth Costa. Reposing at O.B. Davis Funeral Homes, 2326 Middle Country Road, Centereach, New York. Visitation Friday, February 15, 2019 from 7pm to 9pm. Services Saturday, February 16, 2019, 10 am at the funeral home. Interment to follow at Washington Memorial Park, Mount Sinai, New York.