Perella, William A., 80, of Chelsea, formerly of Winthrop, February 21st after a brief illness. Loving son of the late Angelina (DeRosa) Casiello and Alphonso Perella. Brother of Dolores Casiello Roycroft, Richard Casiello, Conchetta (Connie) Hunt, Mary Perrotta (step-sister), Mario Aloisi (step-brother), and the late Rubina (Dolly) Perella-MacDonald, Alphozina (Tina) Perella- Rudolph, and Albert Casiello. Beloved father of Alan Perella of Leominster, Fay Perella Stempien of Danvers, and William Perella, Jr. of Atkinson, NH. Cherished grandfather of Ashley and Alesha Perella of Leominster, Sarina, Gillian, and Nico Stempien of Danvers, Shaylyn Perella of Salem, NH, and Olivia, Anthony, and Madeline Perella of Atkinson, NH. Visiting hours at the Smith Funeral Home on Tuesday, February 28th from 6:00-8:00 PM. Funeral Mass Wednesday, February 29th at St. Anthony of Padua Church, 250 Revere Street, Revere at 9 AM. Services will conclude with interment at Puritan Lawn Memorial Park, West Peabody.