Nishiyama Sōin

Nishiyama Sōin (西山 宗因, Japanese pronunciation: [ɲi.ɕi.ja.ma (|) soꜜː.iɴ], born Nishiyama Toyoichi (西山 豊一) March 28, 1605 in Higo Province, Japan May 5, 1682 in Kyoto) was a haikai-no-renga poet of the early Tokugawa period.

R H Blyth called Sōin "one of the Fathers of Haiku".