His mother, Tengku Asma, was a daughter of Sultan Sulaiman Badrul Alam Shah of Terengganu.
[citation needed] His full brother from the same father and mother was the current Sultan of Kedah, Tunku Sallehuddin.
[citation needed] On 12 December 2011, he was appointed the Chairman of the Council of Regency after Tuanku Abdul Halim became Yang di-Pertuan Agong.
They had four children:[citation needed] His second wife was Puan Sri Dato’ Seri Noor Suzanna Abdullah.
Due to his death, his descendants has been by-passed and his younger brother, Tunku Sallehuddin was proclaimed the next heir and Raja Muda of Kedah on 15 December 2016.