The conferment of the peerage of that time was only limited to the former feudal domain heads and court nobles, and except for these three examples, nobody from shizoku (family or person with samurai ancestors) achieved to ascend to the peerage before the Peerage Law was enacted.
因みに、当時の華族は旧藩主と公家に限定されており、華族令制定以前にこの3例を除いて士族から華族に昇ることはなかった。