Re: Mitrofanov(a)
in reply to a message by Katiuscia
Ukrainian nationality and Russian ethnicity is a common combination. The Ukrainian equivalent of the Russian -ov surname ending is -iv. But, as you point out, -ko is a common ending, particularly in the form -enko, which is very common. -chuk is another common Ukrainian surname ending.
Replies
https://en.wikipedia.org/wiki/Mitrofan