How common were Non-white ethnicities in central Bohemia during the Medieval era?

by addscontext5261

It is a simple question I have been pondering due to some...recent events and I wanted to make sure I was still sane when I said the chances of a nonwhite person being in central Bohemia during medieval times would be near non existent. However I do want to know if any Mongols or Turks made it anywhere near central bohemia in large or even significant numbers

Searocksandtrees