From Rigpa Wiki
Longsal Nyingpo (Wyl. klong gsal snying po) (1625-1692), also known as Longsal Dorje Nyingpo was a tertön whose terma teachings are known by his name. He was a disciple of Rigdzin Düddul Dorje. He was one of those responsible for restoring Katok Monastery, which, after four and a half centuries, had fallen into disrepair.
- Ronis, Jann. “Bdud 'Dul Rdo Rje (1615-1672) and Rnying Ma Adaptations to the Era of the Fifth Dalai Lama.” In Power, Politics, and the Reinvention of Tradition: Tibet in the Seventeenth and Eighteenth Centuries, edited by Bryan J. Cuevas and Kurtis R. Schaeffer, 172-86.