About the juyo (wedding of higher class nobles and other higher social stature personals) process of Tenshoin (An adapted daughter of Nariakira SHIMAZU, Atsuko; and later, she became an adopted daughter of Tadahiro KONOE and changed her name to, Sumiko), historians and other experts determined that Iesada and the O-oku (Edo Bakufu Shogun's inner palace residence and where successive shoguns' wives, ladies, and children were living) residents hoped to have his third lawful wife would be a Satsuma born woman to share in the good luck of his grand father, Ienari, who lived longer and had many children (Kodaiin; she was midaidokoro [a wife of a shogun or a highest-ranking nobleman] of Ienari and was a daughter of Shigehide SHIMAZU).
天璋院（島津斉彬の養女・篤子、のち近衛忠煕の養女・敬子）の入輿について、家定や大奥が長命で子沢山だった祖父・家斉にあやかって薩摩出身の夫人を望んだことが明らかになっている（家斉の御台所広大院は島津重豪の娘）。