From the Japanese language Wikipedia page for Jūjutsu (柔術). I disagree with the suggestion that Chin Genpin was directly responsible for the creation of Kito-ryū, which was in fact an off-shoot of Fukuno Masakatsu's Ryoi Shintō-ryū. However, overall it is both interesting and informative.

"After the end of the Sengoku jidai (Warring States) period, these techniques developed and were influenced by Zen thought, Chinese thought, and medicine. ‘Wa’ (Yawara), and soft schools begin to appear (Sekiguchi-ryū, Yoshin-ryū, Kito-ryū (Ryoi Shintō-ryū), etc.). Under the influence of Chinese culture, some schools called Kenpō (拳法) Shiro-da (白打), Shubaku (手搏) appeared, however, these Ryūha (schools) are often interpreted as soft (Jū /Yawara).

 Also, during this period, several schools such as Oguri-ryū (小栗流) and Ryoi Shintō-ryū (良移心当流) were created under the influence of Yagyū Shinkage-ryū. Around this time, Genpin Chin, who was a cultural figure who came from Ming and stayed at Azabu Kokusho-ji Temple, he opened up the Kito-ryū to Fukuno Masakatsu, Miura Yojiemon and  Isogai Jiroemon. The "Kito-ryū Kenpo Monument" erected in the precincts of Atago Shrine, clearly states that Genpin Chin was the true founder, who opened the Kito-ryū, but Ken Takahashi, a martial arts history researcher, described this as a fictitious posterity (see Genpin Chin # Ken Takahashi's denial)."

See: https://ja.wikipedia.org/wiki/%E6%9F%94%E8%A1%93