Inoue Gennan Inseki
Gennan Inseki Inoue was a Japanese professional go player, and head of the Inoue house from 1824–1846. He proposed a changed numbering that made him the eleventh head, by including Doseki at the head of the list.
At various times he was known as Hattori Rittetsu, Inoue Ansetsu, Intetsu, Gennan Inseki, Inoue Gennan Inseki. A talented player at the highest level, but unlucky in practical terms. He was involved in one of the most famous games, the so-called Ear-reddening game against Hon'inbō Shūsaku.