Ghar Wapsi in some sense emerged after Md Bin Tughlaq's invasion with Deval Samhita
But it always faced massive opposition from trads of those eras
Swami Dayanand made Shuddhi a mainstream movement that was taken to all new level by his disciple Swami Shraddhanand.

Sw Shradhanand was murdered by a Jihadi for his Shuddhi movement. Sw Dayanand is still accused by toolkit-mafia for being founder of Hindutva movement and being inspiration of Savarkar, Hindu Mahasabha, RSS. Even today, almost all Pandits who do Ghar Wapsi carry Satyarth Prakash