was a Japanese statesman and waka poet in the Nara period. He was one of the Man'yà  no Go-taika, the five great poets of his time, and was part of Fujiwara no Kintà Â's .
Yakamochi was a member of the prestigious à Âtomo clan. Like his grandfather and father before him, Yakamochi was a well-known politician, and by Enryaku rose to the position of , his highest bureaucratic position.
Yakamochi was born into the à Âtomo clan; his grandfather was à Âtomo no Yasumaro and his father was à Âtomo no Tabito. The à Âtomo clan were warriors and bureaucrats in the Yamato Court, and Yakamochi served as a in several provinces. He was the nephew of à Âtomo no Sakanoue no Iratsume, who was also poet and a favorite of Prince Hozumi. When Tabito died in 731, Yakamochi became the head of the à Âtomo family.
In 738, he met Udoneri, and in 740 at the behest of Emperor Shà Âmu went to Dazaifu (Kyà «shà «) to suppress the rebellion of Fujiwara no Hirotsugu. In 745 he achieved the rank of in the Imperial court. In July of the following year, he became governor of Etchà « Province, a post he lasted in until 751. By this time he was already the author of 220 waka. In 751, he was promoted to and returned to the capital.
In 754, he was appointed , and the following year concerned himself with the at Nanba, a time that is described in the Sakimori Songs Collection in the Man'yà Âshà «. Yakamochi did not take part in the . Instead, he conspired with Fujiwara no Yoshitsugu, Isonokami Yakatsugu and Saeki no Imaemishi to plot the assassination of Fujiwara no Nakamaro. Afterwards Yoshitsugu took sole responsibility for the affair, but due to suspicions about Yakamochi's involvement he was transferred to the governorship of Satsuma Province.
In 777, he rose to the governorship of Ise Province. According to the records of the , he served in this post for about five years. In 780 he was promoted to . Fearing suspicion and banishment from the capital for aiding in Hikami no Kawatsugu's , he remained quiet and was promoted to in 783.
He died in 785 by drowning in Mutsu Province while attending to his concurrent post as shà Âgun. Soon after his death, Fujiwara no Tanetsugu was assassinated; suspecting that Yakamochi was involved in the affair, his burial was denied and he was posthumously disgraced and excommunicated. His son was stripped of rank and forced into exile, and it was only in 806 that he regained his rank.
A theory holds that Yakamochi was the compiler (or the final compiler) of the Man'yà Âshà «, the first poetry anthology created in Japanese history, for which he not only wrote several poems but also transcribed, rewrote, and refashioned an unknown number of ancient poems and folklore. About 481 of the poems included in the anthology were his works. He was the most prolific and prominent writer of his time, and had a great influence on the Shika Wakashà « as well. The famous Gunka song Umi Yukaba used one of his most famous and outstanding poem as lyrics, and was considered Japan's second anthem during wartime. It was the anthem of the Japanese navy, serving as the send-off song for sailors at the beginning of the war in 1937. It also formed part of the Japanese military appropriation of high culture for the historical justification of its existence.
He wrote a eulogy (banka) for Prince Asaka (å®Âç©ÂçÂÂå Asaka-no-miko).
6.https://skima-shinshu.com/ootomoshi/ 7.https://rekishigaiden.com/yakamochi/