 He was adopted into the "kazoku" peerage by Viscount Machijiri Kazuhiro and inherited the title of "shishaku".His wife was the elder daughter of Prince Kaya Kuninori, Yukiko.Machijiri graduated from the 21st class of the Imperial Japanese Army Academy in 1909, where his classmates included Kanji Ishiwara, Jo Iimura and Harukichi Hyakutake.