Phraya Fa Ngum, son of the exiled Phi Fa, grandson of Phraya Khamphong, and great-grandson of the exiled Phraya Lang, was born in 1316. He was raised by the religious scholar Maha Pasaman Chao (
Phra Mahasamana). At sixteen, he married a Cambodian princess known variously as Kaeo, Yot Kaeo, or Kaeo Lot Fa. Fa Ngoum or Fa Ngum was born in
Muang Sua, a Lao principality located on the site of present-day Luang Prabang, and founded the Lan Xang Hôm Khao (better known as Lan Xang) kingdom in Laos in 1353. Fa Ngum was a grandson of
Souvanna Khamphong, titled Phagna Khampong, ruler of
Muang Sua and grandfather of Fa Ngum, banished Fa Ngum and his father, Chao Fa Ngiao, to the
Khmer kingdom of
Angkor in the 1320s due to his father's indiscretion with one of the grandfather's wives. Another source said that Fa Ngum was sent to exile because Fa Ngoum was miraculously born with thirty-three teeth which was an omen of threatening the well-being of his grandfather's kingdom. Fa Ngum subsequently married a Khmer princess
Princess Kèo Kèngkanya. With the support of
Jayavarman IX, Fa Ngum returned to
Muang Sua with a 10,000 armed men to gain control and consolidate his kingdom. Princess Kèo Kèngkanya later died from plague, while he was campaigning North against the Mongols. In 1353, Fa Ngum founded the kingdom of Lan Xang Hôm Khao—"land of one million elephants and a white parasol." The elephant symbolized military power since most battles were fought using elephants, and the white parasol symbolized royalty, particularly a Buddhist monarch. Fa Ngum further legitimized his rule by enshrining the Prabang Buddha image as the spiritual protector of the kingdom in Viang Chan Viang Kham (present-day
Vientiane and
Viengkham). He made Xiang Dong Xiang Thong (later renamed
Luang Prabang) his capital. Fa Ngum is credited with introducing Khmer culture and Singhalese Buddhism to the region. His religious tutor, Maha Pasaman, also brought back sacred texts and the
Phra Bang. Political turmoil ensued, and Fa Ngum's son Oun Huan also known as Samsènethai, succeeded the throne in 1368. ==King of Lan Xang (Million Elephants)==