Interesting that the only king they can identify is Mansa Musa, and that he keeps popping up on the maps. Given how poorly documented Mansa Musa's reign was, and that the main sources are a small number of Muslim accounts of his Hajj written by people who weren't there when it happened, it seems that to Europeans he was a quasi-legendary and prototypical African king (perhaps similar to the completely legendary Prestor John).
Though I suppose Mansa Musa is held in similar regard today. He's usually the first medieval African ruler I see people bring up, and they often repeat the poorly sourced legend of him being the richest person in history as if it were fact (even this article repeats it).
Though I suppose Mansa Musa is held in similar regard today. He's usually the first medieval African ruler I see people bring up, and they often repeat the poorly sourced legend of him being the richest person in history as if it were fact (even this article repeats it).