Hosai Ozaki

From his wikipedia page:

Ozaki Hōsai (尾崎 放哉, 20 January 1885 - 7 April 1926 haigo (haikai pen name) of Ozaki Hideo, a Japanese poet of the late Meiji and Taishō periods of Japan. An alcoholic, Ozaki witnessed the birth of the modern free verse haiku movement. His verses are permeated with loneliness, most likely a result of the isolation, poverty and poor health of his final years.