D. I was just joking, and you know I've never aim to be offensive;-) Anyway, if you become hungry, I'm sorry for this... 
Now, Wikipedia is based on secondary sources. Here we have all secondary source claiming that Marco was born in Venice, and that is enough. I've no to provide any primary sources at all! If you claim that 5000 (or more) historians worked without using primary sources for their claim, you have to present a VERY good source.