Who created Datta Bavani? Please provide some introduction of the creator.
Yes It is Ranga Avadhoot Maharaj. His samadhi is at Nareshwar(near vadodara) in Gujrat. He was disciple of Swami Vasudevananda Saraswati.
Source : Blog on Rangavadhoot Maharaj
Rang Avadhoot Maharaj Created Datta Bavani. He also gave one mantra
Paraspara Devo bhava
means we humans should behave as devas. means we should not harm anybody.
Bhakti should be without sho off.
The original Marathi Datta Bavani was created by Sree Paramahansa Vasudevanand Saraswati Shree Ranga Avadhoot Maharaj's Guru