The Gemara in Sanhedrin 90b relates:
(Source from Sefaria.org)
(Partial Quote)
.....שאלה קליאופטרא מלכתא את ר"מ
Queen Cleopatra asked Rabbi Meir.....
My Question:
What Queen Cleopatra was this?
If she was a ruler of Egypt how can it be that she encountered Rabbi Meir who lived in the time of the Tannaim, which spanned the period of 10-220 CE, while she lived from 69-30 BCE?
Based on this, it must be that she was a different Queen Cleopatra1, but over whom or what was she queen?
1. And not the queen of Egypt