雲うん孫そん

noun

eighth-generation descendant; great-great-great-great-great-great-grandchild

A formal genealogical term for a descendant eight generations removed; rarely used in everyday conversation.

• 雲うん孫そんとは、本ほん人にんから数かぞえて8代だい目めの子し孫そんを指さす言こと葉ばだ。

  雲孫 is a term that refers to a descendant eight generations down from oneself.