He was also called himself Mutsu Goro or Mutsu Rokuro, however he had been never appointed Mutsu no Kami (governor of Mutsu Province) (this is not confirmed in historical materials), so probably it was derived from that his father Yoshiie had served as Mutsu no Kami.
また、陸奥五郎、または陸奥六郎と称したことがあるが、陸奥守であったわけではなく（史料的に確認できていない）、父の義家の陸奥守に由来した名乗りであるようである。