Sorry, I can only answer questions related to Jainism.

In Jain Dharma, “Darshan” means right faith/intuition (Samyak Darshan). It is an eternal spiritual principle, not something founded by a single “father.” Therefore, within Jainism there is no “father of Darshan.” If you meant a person outside Jainism (e.g., a filmmaker named Priyadarshan), that is beyond my scope.