It's completely understandable, we're hoarding all the zoroastrians in India after all. Still, I would've thought that something of pre-islamic culture would've survived in the folklore of the common people.
Do you know of any such legends?
Edit: such as your name. Merlin the wizard/mage. Mage from Magi. Magi from the ancient persian Magus. Magus meaning learned ones, the ones we called the priests of fire/priests of Sun in India.