Solutions Isaac's eldest has 8 entries with similar clues
- dnaThe "code" in Walter Isaacson's best-selling 2021 book "The Code Breaker"
- cainEldest son of Adam
- shemNoah's eldest
- enochCain's eldest son
- northkim and kanye's eldest child, .... west
- dauphinEldest son of a French king
- firstbornEldest child
- princess-royalThe title that is given to the eldest daughter of a reigning British monarch