In case that someone who had got married or adopted can not return to his/her own family after dissolution because the family was abolished (the Old Civil Codes, Article 740).
婚姻・養子縁組をした者が離婚・養子離縁をした際に、復籍するはずの家が廃家や絶家により無くなっていたとき（旧民法740条）