Demetro was born August 8, 1897 in Vrahneika, Patron, Greece, to Christo and Eleni Pappafotopoulos.
She married James S. Chelemes in the Greek Orthodox Church in Vrahneika, Greece, February 1, 1925.
Demetro came to the United States and settled in Clearfield, Utah, March 1, 1925, spending most of her life in Clearfield. Became a citizen of the United States November 17, 1941.
They were parents of three sons (Nick, Sam and Chris).