Were there people of color in the Middle Ages of Europe? If so, what were the rough population numbers? Were they generally only found in certain areas, or were they widespread? What are the sources we have today, if any, that shed some light on this topic?

There is a common sentiment that Medieval Europe was almost entirely white. I find this hard to believe. There have been quite a few discussions recently online regarding diversity in certain fantasy media modeled after this time period. I often see this sentiment shared in defense of a lack of diversity. I would like to get a little more understanding of the topic to determine if this myth is actually a myth, or if there is any truth to the claim.