Siletz - ethnic group of Oregon, USA

"The Siletz were the southernmost of several divisions of the Tillamook people speaking a distinct dialect; the other dialect-divisions were: Salmon River on the river of that name, Nestucca on Little and Nestucca River and Nestucca Bay, Tillamook Bay on the bay of that name and the mouths of the Kilchis, Wilson, Trask and Tillamook rivers, and Nehalem on Nehalem River. The name "Siletz" comes from the name of the Siletz River on which they lived. The origin of the name is unknown - Wikipedia"