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King Rhesus is a fictional Thracian king in Iliad, Book X, who fought on the side of Trojans. Diomedes and Odysseus stole his team of fine horses during a night raid on the Trojan camp.
The rhesus monkey was named after him.
And because of that, since we do not carry the D antigen once assumed present in rhesus macaques, we are in turn called “rhesus negatives”.
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As you should know, the rhesus factor has absolutely nothing to do with monkeys. It was a mistaken conclusion. Do yiur research.
Yes, we all know this. But wait … it has to do with the rhesus monkey as the D antigen is found within the rhesus macaque. This is to inform people about the origin of the term “rhesus”.