Mufti Mahmood ul Hasan Gangohi ( RAH ) was a great saint. In the following link you can find more info about him.

http://www.daralmahmood.org/muftimahmood.html

I am looking for the list of his khalifa. One of his famous khulafa is Mufti Ibrahim Desain ( dB ).

Do you know any other of his khulafa ?