Nagakata died without having been granted any audience with the Tokugawa shogunate and he had no child and, therefore, there was no possibility for the Kuroda family of Akizuki clan to be permitted, by the shogunate, to adopt any child and the Kuroda family faced a crisis, that is, dying out as a family.
徳川将軍家に拝謁すること無く死んでしまい、かつまた子女もいなかったため、幕府による養子縁組許可のおりる見込みはなく、秋月藩黒田家はお家断絶の危機に見舞われた。