Some historian says that Shigemoto's father was Naruchika NAKAYAMA instead of Shigeyoshi, however, that opinion is doubtful since Naruchika was fifty-eight years older than Shigemoto was and the age difference is a little unnatural.
重基の父は重能ではく、中山愛親ではないかとの説もあるが、重基と愛親の年齢差は58歳もあり、親子としてはやや不自然であるため、信憑性は薄い。