есме

• есмꙑ (esmy)[1] (year 1145±15)
• єсме (esme)[2] (year 1300±25)
• ѥсомо (jesomo)[3] (year 1300±100)
• ѥсми (jesmi)[4] (year 1363±22)
• ѥсмь (jesmĭ)[5] (year 1380±20)
• ѥсме (jesme)[6] (year 1390±15)

First attested as есме (esme) in year 1142±22. From Proto-Slavic *esmъ.

есме (esme)

1. first-person plural present of бꙑти (byti)

• Zaliznyak, Andrey (2004), “бꙑти”, in Древненовгородский диалект [Old Novgorod dialect] (Studia philologica) (in Russian), 2nd edition, Moscow: Languages of Slavic Cultures, →ISBN, page 715 of 872
• Древнерусские берестяные грамоты [Birchbark Literacy from Medieval Rus] (in Russian), http://gramoty.ru, (please provide a date or year)document № 870
• Древнерусские берестяные грамоты [Birchbark Literacy from Medieval Rus] (in Russian), http://gramoty.ru, (please provide a date or year)document № 854
• Древнерусские берестяные грамоты [Birchbark Literacy from Medieval Rus] (in Russian), http://gramoty.ru, (please provide a date or year)document № 670