Gendānu was the adopted son of Dahinien Gorgolo, an Uilta shaman. Like most members of his people at the time, he was unclear on his exact year of birth. In his childhood, his home village of Otasu was ruled as part of the Karafuto Prefecture of the Japanese Empire. He received the Japanese name Kitagawa Gentaro. After the surrender of Japan ended World War II, he was interned in a prisoner-of-war camp in the Soviet Union for seven years. Following his release, he migrated to Japan in 1955. However, his requests for a pension were denied because of the Japanese government's position that Uilta and Nivkh people from Sakhalin were ineligible for armed service and had been illegally recruited. He died in 1984 without pension or compensation from the Japanese government.
In Abashiri, Hokkaidō, Gendānu established a museum of the indigenous peoples of Sakhalin, the Jakka Dukhuni, meaning "keeping place of treasures". His autobiography was published in 1978, in collaboration with Ryō Tanaka, a high school teacher in Abashiri. His niece Lyuba Nakagawa had remained on Sakhalin. In 1995, she visited Tokyo as an emissary to request Japanese government assistance in constructing a memorial to Uilta war dead, as well as other compensation and support; however, she received no response. Tanaka would go on to become the president of the Uilta Kyokai, the Uilta rights association which Gendānu founded. The Uilta language data elicited from Gendānu and his father by Fumio Koizumi would form the basis of later linguistic studies by Shirō Ikegami and Toshirō Shimagari.
- 田中了 (Tanaka Ryō); D. ゲンダーヌ [D. Gendānu] (1978), 『ゲンダーヌ : ある北方少数民族のドラマ』 [Gendanu: Drama of a northern minority], 現代史出版会 [Gendai Shuppankai], OCLC 24385988
- 池上二良 [Ikegami Shirō]; 津曲敏郎 [Shimagari Toshirō] (March 1990), 『北川源太郎筆録「ウイルタのことば」』 [Gentarō Kitagawa's written records of Uilta], ウイルタ民俗文化財緊急調査報告書 [Urgent Investigative Reports on Uilta Cultural Heritage], 北海道教育委員会 [Hokkaidō Education Committee], NDL 93003811
- Morris-Suzuki, Tessa (1996), "Divided Lives: A Story of Indigenous People and the Pacific war", Asia-Pacific Magazine (1): 17–21, retrieved 2011-01-28
- Minichiello, Sharon (1998), Japan's competing modernities: issues in culture and democracy, 1900–1930, University of Hawaii Press, ISBN 978-0-8248-2080-0
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