A sub-school of the Drikung was the Lhapa or Lhanang Kagyu, which was influential in western Bhutan from the arrival of Gyalwa Lhanangpa (b.1164) in 1194 down to the time of Ngawang Namgyal.
In 1640 or 1641 members of the Lhapa sect were expelled from Bhutan together with the Nenying Kagyu[REF] as they had sided with the Central Tibetan forces against the Drukpas during Tibet's three invasions of Bhutan.