He was born in the Sasaki family that had a long history of work as carpenters specializing in temples and shrines in Fukuno-machi Higashi Tonami-gun, Toyama Prefecture (present Fukuno, Nanto City).
富山県東砺波郡福野町(現在の南砺市福野)で代々宮大工であった佐々木家に生まれた。