The Treasury of Lives

Yulkhor Wangchuk (yul 'khor dbang phyug) was the son of Jikten Wangchuk ('jig rten dbang phyug, 15th century), the head of the Lhagyari family (lha rgya ri) in the fifth generation. The family claims descent from the Pugyel (spu rygal) emperors of Yarlung (yar klung) through king Namde Osung (gnam lde 'od srungs, b. 842), the son of king Tri Udumtsen (khri ur dum btsan, r. 836-842), also known as Langdarma (glang dar ma), and his younger wife whose name is unknown. He had a brother named Jampa Rabten (byams pa rab brtan).

During his tenure as head of the family, its territory expanded to include Olkha Taktse ('ol kha stak rtse).