Heungdeok of Silla (r. 826–836) was the 42nd ruler of the Korea

Korea

Korea ) is an East Asian geographic region that is currently divided into two separate sovereign states — North Korea and South Korea. Located on the Korean Peninsula, Korea is bordered by the People's Republic of China to the northwest, Russia to the northeast, and is separated from Japan to the...

n kingdom of Silla

Silla

Silla was one of the Three Kingdoms of Korea, and one of the longest sustained dynasties in...

. He was the younger brother of King Heondeok

Heondeok of Silla

Heondeok of Silla was the 41st to rule the Korean kingdom of Silla. He was the younger brother of King Soseong, and served as regent during the reign of Aejang....

. He was married to Queen Jeongmok, the daughter of King Soseong

Soseong of Silla

Soseong of Silla was the 39th to rule the Korean kingdom of Silla. He was the grandson of King Wonseong, his father Kim In-gyeom having died before he could take the throne. He married Lady Gyehwa, the daughter of the daeachan Suk-myeong.Soseong died only nineteen months after taking the throne...

.

Upon rising to the throne, Heungdeok made Kim Yu-jing his prime minister (sijung) and appointed Jang Bogo

Jang Bogo

Jang Bogo , also known as Gungbok, rose to prominence in Korea in the late Unified Silla period as a powerful maritime figure who for several decades effectively controlled the West Sea and Korean coast between southwestern Korea and China's Shandong peninsula...

 to the command of the Cheonghae Garrison. Jang later used this as a basis for dominating Silla politics through the mid-9th century.

In 834, the king revised the colors of official dress. He also issued an edict forbidding "excessive luxuries" to the common people.

In 836, Heungdeok died without an heir. He was buried in the north of Angang-hyeon

Hyeon

The hyeon were administrative subdivisions of Korea during the Silla, Goryeo, and Joseon periods. They were typically slightly smaller than today's si and gun . They were abolished in the Gabo Reform of 1895.During the Goryeo period, there were about 335 Hyeon; during the Joseon period, 164....

, now Angang-eup

Angang-eup

Angang-eup is an eup or a town and is the second-largest subdivision of Gyeongju City. Its 139 square kilometers are home to about 33,300 people, served by six elementary schools and two joint middle-high schools. Situated next to Gangdong-myeon in the city's northern tip, it is a significant town...

, Gyeongju

Gyeongju

Gyeongju is a coastal city in the far southeastern corner of North Gyeongsang province in South Korea. It is the second largest city by area in the province after Andong, covering with a population of 269,343 people according to the 2008 census. Gyeongju is southeast of Seoul, and east of the...

-si, South Korea

South Korea

The Republic of Korea , , is a sovereign state in East Asia, located on the southern portion of the Korean Peninsula. It is neighbored by the People's Republic of China to the west, Japan to the east, North Korea to the north, and the East China Sea and Republic of China to the south...

.