Background

He was the eldest son of King Ilseong, his mother being of the Bak clan. He married the daughter of King Jima, making this a marriage of 8th degree consanguinity. He was the last of the Bak clan to rule over early Silla. Descendants of Bak Hyeokgeose would rule again near the end of Unified Silla.

Reign

Judging from the reports in the Samguk Sagi, Adalla's reign was a time of considerable expansion. Because Silla was still a small state, however, some scholars doubt the chronology, or attribute the territorial battles with the Seok clan, who replaced the Bak clan as Silla royalty after Adalla's reign.

He is said to have opened the road over Haneuljae (in present-day Mungyeong) in 157, and also the pass of Jungnyeong (in present-day Yeongju) in 159, extending Silla north of the Sobaek mountains.

Tensions increased with the rival Korean kingdom Baekje for harboring a Silla traitor. The Samguk Sagi reports 20,000 soldiers and 8,000 cavalry of Silla battled Baekje in 167.

During his reign, Adalla maintained peaceful relations with the Wa of Japan, who sent an envoy in 158. Himiko sent another envoy in 173.

Legacy

There is no record of his activities during the last decade of his reign. He died without a male heir, and was succeeded by the Seok clan.

Adalla's tomb is believed to lie next to those of two later kings of Bak Hyeokgeose's line, in the Samneung complex near Namsan in central Gyeongju.

治世

• 154年，任繼元為伊飡。155年，任興宣為一吉飡。

• 156年，設立雞立嶺路。157年，設立甘勿縣、馬山縣。158年，設立竹嶺路。

• 165年，阿飡吉宣謀劃反叛，事跡敗露後害怕被殺，便逃到百濟。阿達羅向百濟王要人不得，便攻百濟。百濟守城不出，新羅軍糧盡而歸。

• 167年，百濟攻破新羅西部兩座城池，俘獲千餘人民。後阿達羅命一吉飡興宣領兵兩萬擊之，又親自率八千騎兵，到達漢江。百濟很害怕，便于新羅和平。

• 168年，伊飡繼元去世，興宣接任。170年，百濟侵略邊境。172年，任仇道為波珍飡、仇須兮為一吉飡。

• 173年，倭國女王卑彌呼遣使來聘問。

• 184年，阿達羅尼師今去世，國人立昔脫解子仇鄒之子伐休尼師今為君主。

家庭

• 祖母：伊利生夫人

• 父：逸聖尼師今

• 母：支所禮王女

• 妻：內禮夫人樸氏（祗摩尼師今之女）

• 兒子：樸碧芳，世係為樸碧芳→樸武英→樸判得→樸光欽→樸美一→樸乃物→樸相建→樸仁燁→樸啟輔→樸明信→樸貞環→樸露兼→樸楠善→樸金山→樸應瓚→樸德興→樸大寧→樸尼淳→樸隆釗→樸之坤→樸成順→樸銳謙→神德王樸景暉→景明王樸昇英、景哀王樸魏膺兄弟