surname mean?

Question:

What does this Ukrainian last name/surname mean?

My friend is half Ukrainian and I have looked all over trying to find a site that will tell me what his last name means. If you could please tell me the meaning or a place I can find the meaning it would be of great help to me. And please don't give me smart@ss answers I am not in the mood for people being jerks to get points. I would really like to know, thank you.
The name is:
Tychonievich

Best Answer - Chosen by Asker: It's a patrynomic surname, meaning it evolved as "son of..." into a surname. In this case, it would translate to Son of Tychon, which is a nickname for Thaddeus in Eastern Europe.

BTW, you're friend's not from Ohio by any chance, eh?