Tengku Alam Shah Temenggong,Tengku Ali Iskandar Shah was a prince of the House of Bendahara (Johor),[4] and was the oldest son of Sultan Ali, the 19th Sultan of Johor by his second wife, Daing Siti. Following his father's death in 1877, Tengku Alam and his supporters made an active pursuit to his claims for the Kesang territory and was publicly proclaimed as the Sultan of Johor and Pahang with the regnal name of Alauddin Alam Shah during his marriage ceremony in 1879. The proclamation briefly alarmed Maharaja Abu Bakar, who feared that his political position may be threatened.