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Some villagers say "виноградка" instead of "виноградинка" (a grape). I think it's within the realm of possibility, that Виноградков can stem from this. Moreover, Виноградкин does exist (same roots),...

You are welcome.

I disagree here. Both look completely impossible to me.[/quote]
Well, I said 'probably' and 'hypothetically', because weird things do happen. You never know... :D But I agree,...

An addendum to my previous post. :)

You should realise, that letters in Russian surnames do not appear out of the blue, you can't put them in randomly and create a different surname. Often (but...

It's not a corruption. They are DIFFERENT SURNAMES!!! Really.
I checked, and some sources say that Popkov derives from Popko - an obscure FIRST name (or should I say a nickname), that derived from...

Вообще-то, скорее "попок".[/quote]
Или Попко. )