生せい没ぼつ年ねん不ふ詳しょう

expression

dates of birth and death unknown

Fixed expression used in biographical contexts to indicate that a person's birth and death years are not recorded.

• この画が家かは生せい没ぼつ年ねん不ふ詳しょうだが、作さく品ひんは多おおく残のこっている。

  This painter's dates of birth and death are unknown, but many works remain.