One of Arthur’s knights is literally from Africa
Granted he was portrayed as having vitiligo instead of just being biracial (his dad was a white guy who was a famous traveling knight)
Point still stands though, the historians of the day themselves literally saw nothing weird about that other than “oh yeah this cool guy came to the court from Africa too. His armor is a bit fancy and decorative but he swears it’s a symbol of the pride his Queen wanted to project for his country.”