Three lay patriarchs of the Sakya tradition.

The Three Lay Patriarchs of the Sakya Tradition, literally the 'Three White Ones' (karpo nam sum [Tib.]) are:

1) Sachen Kunga Nyingpo (1092-1158)
2) Lopön Sonam Tsemo (1142-1182)
3) Jetsun Drakpa Gyaltsen (1147-1216).