When Oscar Esteban Poblete Riquelme was born on 5 November 1915, in Chillán, Ñuble, Chile, his father, Javier Poblete, was 15 and his mother, Teresa Riquelme, was 15. He had at least 1 son with Gumercinda del Carmen Bermudez Crisostomo. He died on 3 December 2000, in San Carlos, Ñuble, Chile, at the age of 85.