Etymology and distribution of 舊林.

Furubayashi 【舊林】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Toukyou-to Koganei-shi , Toukyou-to Fuchuu-shi . A variant of 吉沢 . Toukyou - to Koganei - shi tells me that the official mistyped Yoshizawa surname at Meiji New surname. There is a tradition that he lived from Muromachi era in the same place. 吉沢 Yoshizawa reference.