Jakuren
{{short description|Japanese poet}}
Image:Hyakuninisshu 087.jpg.]]
{{nihongo|Jakuren|寂蓮|}} (also known as Fujiwara no Sadanaga (藤原定長) before becoming a monk) (1139–1202){{ cite book
| author-link =
| title = Kodansha Encyclopedia of Japan
| publisher = Kodansha
| year = 1992
| location = Tokyo
| url =
| doi =
| isbn = 4-06-205938-X
| page = 647
| author = kanshū Edowin O Raishawā, Katō Ichirō ...}}
was a Japanese Buddhist priest and poet. He was adopted by the noted poet Fujiwara no Shunzei upon the death of Shunzei's younger brother.{{cite journal
|last = Brower
|first = Robert H.
|title = Ex-Emperor Go-Toba's Secret Teachings: Go-Toba no in Gokuden
|journal = Harvard Journal of Asiatic Studies
|volume = 32
|pages = 27, 47
|year = 1972
|doi = 10.2307/2718867
|jstor = 2718867
|url = https://dl.dropboxusercontent.com/u/182368464/japanese-literature/1972-brower-exemperorgotobassecretteachings.pdf
|url-status = dead
|archiveurl = https://web.archive.org/web/20160303193542/https://dl.dropboxusercontent.com/u/182368464/japanese-literature/1972-brower-exemperorgotobassecretteachings.pdf
|archivedate = 2016-03-03
}} Shunzei originally intended for Sadanaga to be his heir; however, he subsequently had two male offspring of his own, and Sadanaga was forced to step aside in favor of Fujiwara no Sadaie. As was common practice at the time, he became a monk, and acquired the religious name of Jakuren. Taking Saigyo as his model, he traveled around the country, composing poems of his travels. He was well regarded in his time and frequently associated with Fujiwara no Teika. He was one of the six compilers of the eighth imperial waka anthology, the famous Shin Kokin Wakashū, and thirty-five of his poems were selected for the work.{{cite book
| last = Keene
| first = Donald
| author-link =
| title = Seeds in the Heart
| publisher = Columbia University Press
| year = 1999
| location =
| pages = 694 (note 131)
| url =
| doi =
| isbn = 0-231-11441-9 }}
Before he died, he adopted Fujiwara no Ietaka, pupil to Shunzei.{{cite journal
| last = Brower
| first = Robert H.
| author-link =
| title = Ex-Emperor Go-Toba's Secret Teachings: Go-Toba no in Gokuden
| journal = Harvard Journal of Asiatic Studies
| volume = 32
| issue =
| pages = 27
| year = 1972
| jstor = 2718867
| doi = 10.2307/2718867
| id =
}} One of his poems was included in the famous poetry anthology Hyakunin Isshu.
His 117 poems were selected for "Senzai Wakashu" (Collection of Japanese Poetry of a Thousand Years) and other successive Chokusen Wakashu (anthology of Japanese poetry compiled by Imperial command).{{cn|date=February 2024}} His personal collection on poetry is "Jakuren Hoshi shu."{{cn|date=February 2024}}