Sometime in 1833–1834, though the incident has been dated later, to around, 1839, whalers, perhaps 'tonguers,' are thought to have clashed with the Kilcarer Gundidj on the beach at Portland at a site that later became known as Convincing Ground in an incident now known as the Convincing Ground massacre. Various versions exist. The site earned its name either because whalers hashed out their disputes there, because some transaction took place between the indigenous people and whalers, or because disputes arose, either of whale flesh or of the use of native women. If the dispute was over the carcass of a beached whale, the whites may have wished to flense it while the natives may have insisted that it was theirs, as dictated by their ancient customs.