a brief biography

GURU CHÖWANG (gu ru chos dbang). One of the Five Terton Kings. (1212-1270). He is regarded as a reincarnation of Trisong Deutsen (khri srong de'u btsan) (790-844), the second great Dharma king of Tibet who invited Guru Rinpoche, Shantarakshita, Vimalamitra, and many other Buddhist teachers including Jinamitra and Danashila.
For details, see the H.H. Dudjom Rinpoche's The Nyingma Lineage, its History and Fundamentals p. 760-770, Wisdom Publications. Guru Chowang means 'Master Lord of the Dharma.'

The Five King-Like Tertons (gter ston rgyal po lnga): One list of the Five Terton Kings contains Nyang Ral Nyima Özer (1124-1192), Guru Chokyi Wangchuk (1212-1270), Dorje Lingpa (1346-1405), Pema Lingpa (1445/50-1521), and (Padma Ösel) Do-ngak Lingpa (Jamyang Khyentse Wangpo) (1820-1892). Sometimes the list also includes the great terton Rigdzin Godem (1337-1408).

Publications
Some of the revelations of Guru Chowang (terma treasures revealed by him) are included in
Dakini Teachings
Advice from the Lotus-Born

Some of his most important terma (treasure) revelations include
Lama Sangdu (bla ma gsang 'dus). A terma discovered by Guru Chowang (1212-1270), one of the earliest and most important tertons. It focuses on the guru principle as Padmasambhava's sambhogakaya form of the fivefold mandala of Totreng Tsal. Lama Sangdu means 'embodiment of the master's secrets.'
thugs rje chen po yang snying 'dus pa terma on Avalokiteshvara revealed by {gu ru chos dbang} at lho brag mkhar chu dpal gyi phug ring.
sangs rgyas mnyam sbyor lcags snyug ma - liturgical arrangements and explanations of the bka' ma teachings of the {sangs rgyas mnyam sbyor} cycle.
yang gsang spu gri, cycle on Vajra Kilaya.
bka' brgyad gsang rdzogs, cycle on the Eight Commands / Eight Sadhana Teachings.
rdzogs chen yang ti sangs rgyas mnyam sbyor, his Dzogchen cycle.

the Eleven Deeds of Padmakara, a biography of the Lotus-Born master, Padmasambhava

The Dharani that Condenses the Essence of the Entire Tripitaka (bka' 'gyur ro cog gi snying po bsdus pa'i gzungs)

aka (gu ru chos kyi dbang phyug)

Guru Chowang is counted among the former lives of Tulku Urgyen Ringpoche.