I'm trying to find the first instance where Elinipsico (son of Cornstalk) is referred to as Allanawissica.
Right now, May 2025 I have this
REVOLUTION ON THE UPPER OHIO, 1775-1777
published in 1908
Compiled from the Draper Manuscripts in the Library of the Wisconsin Historical Society and published at the charge of the Wisconsin Society of the Sons of the American RevolutionEDITED BYREUBEN GOLD THWAITES, LL. D.
You can read it online
https://archive.org/details/revolutiononuppe01thwa
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The first Instance that I have found of Elinipsico (spelled with two Ls) in a published work is:
Chronicles of border warfare
by Withers, Alexander Scott, 1792-1865
published in 1831
read online
https://archive.org/details/Ayer_154_V7_W8_1831/page/n132/mode/1up?q=ellinipsico
Do you know of anything earlier?