Tadayuki MIZUNO was a hereditary vassal to the Tokugawa family in the mid-Edo period as well as a member of the shogun's council of elders of the Edo bakufu (Japanese feudal government headed by a shogun).
水野忠之（みずのただゆき）は、江戸時代中期の譜代大名で、江戸幕府老中。