Who was the first known gay person?

No one knows, since there have been gay people since before recorded history. But if you are talking about recorded history, then the first record of a possible same-sex couple in history is commonly regarded as Khnumhotep and Niankhkhnum, an ancient Egyptian male couple, who lived around 2400 BCE. The pair are portrayed in a nose-kissing position, the most intimate pose in Egyptian art, surrounded by what appear to be their heirs.