[2] He was also the father-in-law of Princess Amal Nasibah, daughter of Sultan Omar Ali Saifuddien III.

In 1953, he was nominated to the Constitutional Advisory Committee (also known as the Tujuh Serangkai),[4][7] and was a close friend of Sultan Omar Ali Saifuddien III.

The committee offered suggestions for constitutional advancement in the sultanate, crucial in securing Brunei's nationalist objectives.

The British high commissioner, the chief police officer, the officer-in-charge of the Special Branch, and the Menteri Besar of Brunei made up its membership.

In his stead, the Sultan appointed two of his closest advisors: Pengiran Ali, the head of the department in charge of religious affairs, and Marsal Maun as acting Menteri Besar.

[10]Pengiran Ali was named Deputy Menteri Besar of Brunei on 23 September 1962,[11] and resigned in 1965 to run in a by-election.

The Brunei revolt of December 1962, the ambiguity surrounding the creation of Malaysia, and the issues brought on by Konfrontasi all occurred during this tumultuous period.

[6] After the elections in December 1965, he founded the Partai Kemajuan Rakyat (PAKAR) political party, to push for the establishment of parliamentary governance and independence.

[5] His burial took place the same day at his home in Kampong Madewa, attended by Prince Mohamed Bolkiah, who was serving as the Deputy Sultan.