That's actually the most important part of the text.
Yes, as always when it comes to Slavs and especialy Serbs
That's what I said as well.
There is no proof as such.
if they say so
The fact that he was a commander of a ship, doesn't automatically mean that he's from the area.
if you say so
So I guess we will never know for sure.
yes, you guess
Another theory is that Marco Polo never went to Asia.
That he heard stories of travelling merchants who did and he just made their stories his own.
Actually I read something about that some time ago. Can't remember where, however, I will have a look at it and post it once I found it.