9th-century Buddhists

, born posthumously called , was a Japanese Buddhist monk, calligrapher, and poet who founded the esoteric Shingon school of Buddhism. He travelled to China, where he studied Tangmi (Chinese Vajrayana Buddhism) under the monk Huiguo. Upon returning to Japan, he founded Shingon—the Japanese branch of Vajrayana Buddhism. With the blessing of several Emperors, Kūkai was able to preach Shingon teachings and found Shingon temples. Like other influential monks, Kūkai oversaw public works and constructions. Mount Kōya was chosen by him as a holy site, and he spent his later years there until his deat

Tritsuk Detsen (), better known by his nickname Ralpachen (; 802–838), was the 40th King (Tsenpo) of Tibet from 815 to 838. He reigned after the death of his father, Sadnalegs, and grew the empire to its largest extent. He was murdered by his younger brother Langdarma in 838. Ralpachen is one of the "Three Dharma Kings of Tibet", and referred to as "son of God" in the ancient Tibetan chronicle Testament of Ba.

Emperor of Tang China from 846 to 859 AD

Tridé Songtsen (), nicknamed Sadnalegs (), was the 39th King (Tsenpo) of Tibet from 800 to 815. He was the third and youngest son of Trisong Detsen. He reigned between the disputed king, Muné Tsenpo, and the 40th king, Ralpachen, making the dates of his reign from 800 to 815.

Japanese empress (786-850)