The most irregular of all our verbs is the most fundamental and likely the oldest. Dave’s article on this verb is helpful, but I’m wondering about the roots of this odd verb.
The reason our English verb “to be” is so strangely conjugated is because it has three distinct roots says Dave in his October 2007 entry above.
“es-” and “wes-” combined before the Old English period to become Wesan (interesting that Wesen in German is “being”—(though Heidegger chose “Sein”.) So, this is likely of Germanic roots. The plural is “sind” or “sint” which seals the Germanic connection AFAICT.
But where does “beon” come from? It still has Germanic echoes in such conjugations as “bist” (2nd person singular “du bist") so maybe both of these forms are Germanic.
Still “es-” seems Latin somehow. I’m showing my ignorance of these matters, so bear with me.