Ryūsuitei Tanekiyo [柳水亭種清] (Japanese, 1823–1907)

Alternate names:
Hakkōsha Tokusui 八功舎得水
Sakurazawa Dōzan 桜沢堂山
Koikawa Shōzan 恋川笑山 (likely same person; used as artistic identity)
Insuitei 淫水亭 (shunga pseudonym, shared with or identical to Koikawa Shōzan)

Selected works:
Suiko gaden 水滸画伝 (1856), ill. Totoya Hokkei
Ehon Toyotomi Kunkōki 絵本豊臣勲功記, ill. Kuniyoshi
Ukiyo Genji Gojūshijō 浮世源氏五十四帖, Part 1 [前編], 3 vols. (Bun'kyū period, 1861–1864), ill. as Koikawa Shōzan; publ. Kirakudō 喜樂堂

Note: The pseudonym Insuitei (淫水亭), under which the preface to Ukiyo Genji Gojūshijō is signed, was used by both Ryūsuitei Tanekiyo and Koikawa Shōzan; some scholars have argued that the two names refer to the same person.

Sources:
Library of Congress NAF: n84194239 (dates given as 1822–1908)
NDL Authorities: 00161048 (dates given as 1823–1907)
Wikidata: Q18818540 (dates given as 1821–1907)