Who was the oldest person in Russia?

CHECK FOR GENTLEMAN BY NAME MAGHMUT WHO WAS ALLEGEDLY 154YEARS IN 1959 WITH GRANDCHILDREN OF OVER 100YEARS OLD, WAS A BOY AT TIME OF NAPOLEONS INVATION AND WAS STILL HORSERIDING. UNCONFIRMED. DISCUSSED IN AN ARTICLE IN A SOUTH AFRICAN MAGAZINE "HUISGENOOT" IN AN ISSUE OF 1959.