According to the genealogy handed down to his descendants, his name is written as '親重' in Chinese characters (there is another man also called 'Chikashige MIMURA [三村親重]' who was a relative of the same Mimura clan in Bicchu).
子孫に伝わる系図では「親重」とも（同じく備中三村氏の縁者に「三村親重」もいるが、これとは別人）。