 The couple are also fifth cousins through their shared descent from Marquis Nakayama Tadayasu, the maternal grandfather of the Meiji Emperor.By birth, Kunimaro is also related to other members of the imperial family.He is a sixth cousin once removed of his grandmother-in-law, Princess Mikasa, a third cousin twice removed of Princess Hitachi and a cousin of the late Princesses Takamatsu and Chichibu (a second cousin thrice removed and a fourth cousin thrice removed, respectively).