Monzaemon's parents were Nobuyoshi SUGIMORI, a feudal retainer of the Echizen domain whose master was Masachika MATSUDAIRA, and Kisato, Hogen Ichiku OKAMOTO's daughter (Hogen is a title for a professional like a doctor or an artist and OKAMOTO was a doctor's family).
門左衛門は、松平昌親に仕える越前藩士・杉森信義と医者の家系である岡本為竹法眼の娘・喜里の間に生まれた。