Artist – SADAHIRO (1838 - 1918) was born as Hirokane ( (広兼 / 廣兼), later changed to Mitani Matasaburô (三谷又三郎). To distinguish him from Sadahiro (I), it is internationally accepted to name him SADAHIRO-II. SADAHIRO-II (二代貞廣) also known as Hirosada-II (二代廣貞), was a designer of ukiyo-e Japanese woodblock prints in Osaka. SADAHIRO is said to have studied under Kunisada Utagawa and used the name Sadahiro Utagawa (貞廣 歌川). SADAHIRO Utagawa may be identical with Hirosada Utagawa.
After his apprenticeship in Edo, he  went to Osaka. His style is typical for the 'Osaka School' of printmakers with mostly kabuki actor scenes and portraits. In Osaka he became student of Konishi Hirosada (小西 廣貞) (Hirosada-I, 廣貞), and was trained in Maruyama-style painting, but turned toward printmaking. He also had been an illustrator for Asahi Shimbun (a publishing firm founded in Osaka in 1879).  SADAHIRO assumed the name “Hirosada” ("廣貞") in 1853, when his teacher ceased designing prints. In the summer of 1864, Hirosada-I died and his student changed his name for a second time, from “Hirosada” (廣貞) to “SADAHIRO” (貞廣).


Personal life - SADAHIRO had been born on an island belonging to the city of Osaka. His birth name was Hirokane (広兼 / 廣兼). Hirokane's father was a shamisen virtuoso named Akira sumeragi-tei (昭皇亭). SADAHIRO died at the age of 71 and was entombed in the Shimodera-machi Komyo-ji crypt. His posthumous name was Takayo Sadahiro (高誉貞広).


Aliases - Hirokane ( (広兼 / 廣兼, birth name), MITANI Matasaburô (三谷又三郎, childhood name) , Sadahiro (貞廣), Sadahiro Utagawa (貞廣 歌川), Hirosada-II (二代廣貞), Shôkôtei Sadahiro ( 昭皇帝貞広),  sometimes only with the epithets Gochotei (五蝶亭), Gokitei, Gorakutei, Gosotei, and  Kogado.


Disciples -  none known