 When Tuanku Munawir died, his brother, Tuanku Ja'afar Tuanku Abdul Rahman, became the ruler of Negri Sembilan, by-passing Munawir's son Muhriz of Negeri Sembilan, who at 19 years of age was a minor.Tuanku Jaafar also served as the tenth Yang di-Pertuan Agong of Malaysia.During this period, Negeri Sembilan was ruled by the regent, Y.A.M.