Jongkong
Jongkong's early story belongs to the Embau country of the upper Kapuas. Local tradition places the first settlement near Lake Unang, where an old grave is associated with Abang Jombo, also called Kiyai Pati Uda. He was remembered as a figure in the spread of Islam among Embau's inhabitants. Accounts also connect the ruling families of Jongkong with those of Suhaid, Silat and Bunut.
The court's palace, known as Susuriyah, stood at Ulak Landau near the later Jongkong Kiri settlement. Oral traditions place the kingdom's beginnings around the late seventeenth or early eighteenth century, although other chronologies give a later foundation. This river polity joined local descent relationships with Islamic authority: its history was preserved through remembered rulers, burial places and the location of the palace. The settlement's story consequently extends beyond downstream trading connections to a political and religious centre within the upper Kapuas itself.