Anastacio was born on .... to Benito Olaes and ......
Anastacio's brother is Higino Olaes and his half-brothers were Cornelio Galan Olaes, Emilio Galan Olaes, Victor Galan Olaes, Nemcio Galan Olaes, Constantino Galan Olaes, andLeopoldo Galan Olaes. His half-sisters were Soledad (Galan) Olaes Basa and Petronila (Galan) Olaes Deleon.