Shree Mahaprabhuji - Vallabhacharya (1479-1531 CE) was a devotional philosopher, who founded the Pushti sect in India, following the philosophy of Shuddha advaita (Pure Non-dualism).
Vallabhacharya accepted the 'Acharya' designation of Vishnuswami Sampraday (Rudra Sampraday) upon request of Bilvamangala Acharya, the last Vishnuswami Sampraday acharya before Vallabhacharya. This was after Vallabhacharya won the famous debate of Brahmavada over Shankaras in the courtyard of the Emperor Krishna Deva Raya of Vijayanagara Empire - the prosperous South Indian Empire. Apart from being the acharya of Vishnuswami Sampradaya, Vallabhacharya also propagated the Pushtimarga upon the god Krishna's order and thus became the acharya of not only Vishnuswami Sampradaya but also Pushti Sampradaya.