Mōri clan
In 1594 there is a letter sent to the commanders of the Mōri forces in Korea. It was addressed to Kobayakawa Takakage from Katō Kiyomasa saying that Hideyoshi wanted to give his nephew Hashiba Hideaki (羽柴秀俊) as an adopted son to the Mōri clan for adoption. Mōri Terumoto was already 40 years old and had no heir. Fearing that this would make the heir to the Mōri clan someone without Mōri blood he adopted Hideaki himself and he became known as Kobayakawa Hideaki.