Dutch Sennecaas, plural, the Iroquois living west of the Mohawk
circa 1616, in the meaning defined at sense 1
“Seneca.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Seneca. Accessed 3 Dec. 2023.
Britannica.com: Encyclopedia article about Seneca
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