As part of the Plantation of Ulster in the early 17th century, the lands around Belturbet were granted to the English "undertaker" Stephen Butler. He soon established a thriving urban centre, whose prosperity relied heavily on its position on the Erne. The town was seized by the Irish during the Irish Rebellion of 1641, and was the site of one of the massacres of planters, in which over two dozen people were thrown from the town's bridge and drowned. In March 1653, under Viscount Magennis of Iveagh, it was the last town in Ireland to fall to Cromwell; the final Irish stronghold at nearby Cloughoughter held out for a further month.