Strictly speaking, there is something about Obu no sho that should be known: both MINAMOTO no Sueto and MINAMOTO no Suesada did not take the family name of Obu until Munesue OBU used the family name after MINAMOTO no Tadamune called himself Genta OBU, taking the family name of Obu.
また、飯富庄との関連では、源忠宗が飯富源太を称し、飯富氏を名乗った後、飯富宗季が飯富氏を名乗るまで、源季遠も、源季貞も厳密には飯富氏を称していない。