No, there is no cheat like that.
Yes he is in parts 3 and 4 of the game
Ranulf Compton was born in 1878.
Ranulf Compton died in 1974.
Ranulf I of Aquitaine was born in 820.
Ranulf I of Aquitaine died in 866.
Ranulf Flambard was born in 1060.
Ranulf Higden died in 1364.
Ranulf Higden was born in 1280.
Ranulf of Wareham died in 1222-09.
Ranulf de Glanvill died in 1190.
Ranulf II of Aquitaine died in 890.
Ranulf II of Aquitaine was born in 850.