However, as no child was born with any lady other than Yodo-dono (Many researchers doubt the existence of his children at the time of Nagahama-jo Castle in Omi Province, for example; his first child, Hidekatsu HASHIBA [Ishimatsumaru]), and only Yodo-dono bore two children, therefore, doubt about relationship of Hideyoshi and Hideyori have been raised.
しかし、その一方で淀殿との間以外に子ができず（長子羽柴秀勝(石松丸)ら長浜城(近江国)時代の子の実在を疑う研究者も多い）、また、淀殿だけが2人の子供を生んでいることから、秀吉と秀頼の父子関係に対する疑問が唱えられたものと考えられる。