More specifically, the second son of Taneshige AKIZUKI was adopted as an adopted succeeding son, Naganobu KURODA (the mother of Tanenogi AKIZUMI was a daughter of Nagakuni KURODA).
具体的には、秋月種茂の次男を養嗣子黒田長舒（秋月種頴の母は黒田長邦の娘）として迎えた。