Question

How do you pronounce "Stepanek" in Mattie Stepanek?

Answer 1

That's hard. I would pronounce it "step-AH-nik", but individual people or families may have preferred pronunciations that are different than what you might expect. So, you pronounce the names as the bearer wishes. That's especially true with names from other languages which may be pronounced differently in the U.S. than they were in the home country.