his last residence was listed as Wysoky
emigrated back to Lithuania
The word "Wysoki" means High (masculine). Similar, "Wysoka" means High (feminine) and "Wysokie" - High (neutral). If used as a name place the first two versions could not stand alone, but would have to be followed by a noun, as in "Wysoki Las" (High Forest) or "Wysoka Góra" (High Mountain). However, the third, neutral version, could stand alone; "Wysokie" simply implying "High Place" or "High Village".
"Wysokie", when spelled Vysokie, could be pronounced in English exactly the same as Vysoki; hence it was easy to loose the final letter E in the word.
There are 15 "Wysokie" villages in Poland, three of them in NE province, Podlaskie Voivodship.
Wysokie, Gmina (municipality) Korycin, Sokółka County,
en.wikipedia.org/wiki/Wysokie,_Sok%C3%B3%C5%82ka_County
Wysokie, Gmina Raczki, Suwałki County,
en.wikipedia.org/wiki/Wysokie,_Sok%C3%B3%C5%82ka_County
Wysokie, Gmina Wiżajny, Suwałki County,
en.wikipedia.org/wiki/Wysokie,_Gmina_Wi%C5%BCajny
The latter lies right on the Lithuanian border.