Hanuman was born to your Benaras. His mother Anjana was an apsara who was born on earth as a result of a curse. She was redeemed from this curse on offering birth to your son. The Valmiki Ramayana states that his father Kesari was the son of Rahu and was he was the King of the place named Sumeru. There https://hanumanmandirsydney.com.au/temple-construction/