Tunku Besar
Tuanku Muhriz was made Tunku Besar, or heir presumptive in 1960. However, he was bypassed by the Council of Undangs to become Yang di-Pertuan Besar when his father died in 1967 for his uncle, Tuanku Jaafar. Tuanku Jaafar was elected by the Undangs as the 10th Yang di-Pertuan Besar of Negeri Sembilan.
The Negeri Sembilan Constitution states that the order of succession should first be the sons of the previous Ruler, followed by the grandsons of the previous Ruler, then by the brothers of the previous Ruler, and only then by the sons of the brothers of the previous Ruler.
Tuanku Muhriz was first in the order of succession before the death of Tuanku Munawir, followed by Tunku Jaafar and Tunku Abdullah. When Tuanku Munawir died, Tuanku Muhriz was not chosen. Instead the council chose his half-uncle Tuanku Jaafar ibni Almarhum Tuanku Abdul Rahman, a diplomat. It has been suggested that the then Prime Minister of Malaysia, Tunku Abdul Rahman, influenced the Undangs not to choose Tuanku Muhriz on account of his youth (he was then only eighteen).
Read more about this topic: Muhriz Of Negeri Sembilan