Drayab Lodrö Gyaltsen
He taught just like Öntö Khyenrab Chökyi Özer, who, it is said, taught exactly like Khenpo Shenga. He spent many years in prison, were he was tortured, but he taught his fellow inmates whenever he had an opportunity.
Writings
He composed a commentary on the ninth chapter of the Bodhicharyavatara. He also wrote a commentary to Sakya Pandita's Treasury of Valid Reasoning, which has not survived. (Source: Rigpa Wiki)