Rose Marie Peon Diaz of Tarrytown died on September 22, 2017 at Rosary Hill Home, Hawthorne, NY of cancer. She was born in New York City on September 29, 1939 the daughter of Michael and Jean Mendicino and widow of Carlos Peon Diaz. She retired from Valhalla Labs and Research. She is survived by her daughter Laura Jean Lingardo-Peon Diaz and her son Carl Peon Diaz both of Wappingers Falls, her two grandsons Brent and Craig Lingardo, her sister Michele Daly-Mendicino and brother Frank Mendicino of Florida. Graveside Service at Sleepy Hollow Cemetery on Friday, September 29, 2017 at 11:00am. Memorial contributions to St. Jude Children’s Research would be appreciated. John G. Crawford Funeral Director