MacCarthy Island, then known as Lemain Island, was purchased by the British captain
Alexander Grant in 1823 in exchange for annual payments to Kolli Camara, the king of
Lower Niani. It was intended as a settlement for freed slaves. A dispute ensued when the colonists demanded labor from Niani, but the ruling Kamara clan sent an army instead, forcing the British to take refuge in their new fort. A counterattack on the Niani capital of Ndougousine failed, with the Mandinka capturing two cannons, but the island remained in British hands. By the 1840s the trading post was doing steady business in hides, wax, and ivory; it was the furthest upriver post the colonial administration controlled. In 1880 the town had a population of 1263, of whom only one was a European. Janjanbureh is the birthplace of the Yale University historian
Lamin Sanneh. ==Janjanbureh today==