 Ian D. Clark has identified 28 massacre sites most of the colonialist slaughters taking place during the Eumerella War, so named when the phrase was used as a chapter heading in the memoirs of the novelist Rolf Boldrewood who squatted 50,000 acres near Port Fairy a decade after the main killings.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.