Rumaliza

Muhammad bin Khalfan bin Khamis al-Barwani, commonly known as Rumaliza, was an Omani Swahili trader of slaves and ivory, active in Central and East Africa in the latter part of the nineteenth century. He was a member of the Arabian Barwani tribe. With the help of Tippu Tip, he became the Sultan of Ujiji. At one time, he dominated the trade of Tanganyika, before being defeated by Belgian forces under Baron Francis Dhanis in January 1894.