Мельников Григорий Матвеевич
relative through the Melnikovs of Chernyaevka (from the revisions; the link to our line is probable)
Son of Matvei Semyonov, died before 1745: the 1745 revision lists his son Mark as «grandson, son of the late son Grigory» (S307). Father of Ivan Grigoryevich.