Kooliny Diabune is remembered as one of the pre-colonial prophets of the Jola-Esulalu, a group on the south bank of the Casamance river. Active during the height of the Atlantic slave trade, he was among roughly fifteen known male figures who claimed direct revelation from the supreme being Emitai and who introduced or reformed spirit-shrines to steady a society under strain from slave raiding and commerce. His career belongs to the earlier, exclusively male phase of the Diola prophetic tradition that later, under colonial pressure, gave way to a succession of women prophets. He stands with Alandisso Bassène and Alinesitoué Diatta as one of the three prophets whose lives anchor the documented history of Diola prophecy.