Efthalia (Kontos) Kosmas, 91, of South Yarmouth, MA died Wednesday, February 5, 2020. She was the wife of the late Nikolaos Kosmas. Visiting hours Monday, February 10th from 10-11 a.m. at St. George Greek Orthodox Church in Centerville followed by an 11 a.m. Funeral Service. Burial in Cummaquid Cemetery. Arrangements under the direction of Doane, Beal & Ames in Hyannis.