What is "sadlermiut"

The Sadlermiut (also called Sagdlirmiut, or Sallirmiut in modern Inuktitut spelling, from Sadlerk now Salliq, the Inuktitut name for the settlement of Coral Harbour, Nunavut) were an Inuit group living in near isolation mainly on and around Coats Island, Walrus Island, and Southampton Island in Hudson Bay. They survived into the early twentieth century and were thought by some to have been the last remnants of the Dorset culture as they had preserved a distinct culture and dialect from the mainland Inuit. Despite their culture and local traditions seeming to show combined elements of both the Dorset and Thule societies, recent genetic studies show no Dorset admixture and prove a sole Inuit ancestry leading many to conclude the cultural difference may be entirely due to their isolation from the mainland Inuit.