Sotatsu HAYAMI who was born in the family of Hikotatsu HAYAMI, a successor of the job as goten-i (a doctor hired by a family of shogun or other feudal lord,) became acquainted with kangaku (the study of Chinese classics) and kokugaku (study of ancient Japanese literature and culture) by studying them at Kogido (a private tutoring shoool to teach Confucianism by Jinsai ITO in Kyoto).
速水宗達は、代々御典医を務めて速水彦達と呼ばれた家に生まれたが、古義堂に学んで漢学や国学に深く通じた学者となった。