The birth place of the Yagyu clan was Yagyu-go village, Sonokami-no-kori County, Yamato Province (today's Yagyu area, Nara City), which was located in the northern part of Yamato Province.
柳生家の発祥地は大和国添上郡柳生郷（現奈良市柳生地区）で、大和国北部にある。