Sungei Ujong, a state within the confederation in particular was the site of many locally important mines. It was ruled by Dato' Kelana Sendeng. However, another local chieftain named Dato' Bandar Kulop Tunggal had more influence than Dato' Kelana. Dato' Bandar received great support from the locals and even from the Chinese immigrants who worked at the mines of Sungai Ujong. Dato' Kelana's limited popularity made him dependent on another chieftain named Sayid Abdul Rahman, who was the confederation's "Laksamana Raja Laut" (roughly royal sea admiral). The strained relationship between Dato' Bandar and Dato' Kelana caused frequent disturbances in Sungai Ujong.