Gringai otherwise known as Guringay, is the name for one of the Australian Aboriginal people who were recorded as inhabiting an area of the Hunter Valley in eastern New South Wales, north of Sydney.
They were united by a common language, strong ties of kinship and survived as skilled hunter–fisher–gatherers in family groups as a clan of the Worimi people.
Flynn had been a member of an armed troop of nine settlers who went to the aborigines' camp at the Williams River at dawn to arrest some of them for culling sheep on their land.
In August of that year, he was deemed responsible for the death of five convict shepherds working for Robert Mackenzie, later premier of Queensland, at Rawden Vale, 26 miles west of Gloucester.
"[10] One later story, recounted in 1922 in the Wingham Chronicle, suggests that a raiding party set out to enforce the verdict by hunting other Gringai, managing to round some up and push them all over a cliff at Barrington.