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today we learned: the reason that went is the past tense of go is because it's not the past tense of go, it's the past tense of wend, an archaic word synonymous with go, a word which apparently just didn't have a past tense? so even though wend fell out of use (except for the rare poetic use), went is still perfectly current
-F
this is a linguistic phenomenon called "suppletion" if you want to look up more about it
other examples in english are person/people, cow/cattle, be/is/was
-F
we remember some particularly egregious examples of this from Latin class, but can't remember what the actual examples were.
-R