This Naito clan, which was a vassal to the Matsudaira clan (the Tokugawa clan) in Mikawa Province and provided daimyo (feudal lords) during the Edo period, is documented to share ancestors with the Naito clans of Tanba and Suo mentioned above, but the history of the clan during the Sengoku period (the Warring States period) is not known, and there is strong possibility that the pedigree was fabricated.
三河国の松平氏（徳川氏）の家臣で江戸時代に大名となった内藤氏は上述の丹波・周防の内藤氏と同祖とされるが、この間、戦国期までの事蹟は明らかではなく、仮冒の可能性も強い。