Kalyanamitra
Kalyanamitra (Tib. དགེ་ལེགས་བཤེས་གཉེན་, Wyl. dge legs bshes gnyen) is the author of several texts on the Vinaya found in the Tengyur, including Questions on the Vinaya ('dul ba dri ba) and its auto-commentary Extensive Commentary on Questions on the Vinaya ('dul ba dri ba rgya cher 'grel pa).