 Dato Bahaman was said to be adopted by Bendahara Ali and a playmate to Sultan Ahmad during his childhood.When Sultan Ahmad took the throne, Dato' Bahaman had sworn to give great service to his homeland.Dato' Bahaman was promoted as one of the Orang besar berlapan and was awarded the title name dato setia perkasa pahalawan semantan for showing his ability as an admiral in the civil war between Sultan Ahmad and the prince Wan Muhathir.