In the Edo period, every daimyo (feudal lord) family under the shogunate system was said to have a firm kafu and kakun, and even among some merchants and peasantry families, kafu was established and kakun and kaken were prepared.
江戸時代の幕藩体制のもとではどこの大名家にも確たる家風と家訓が存在したと言われ、更に一部の商人や農民の間でも家風の確立と家訓・家憲の作成が行われていた。