Proto-Indo-European
(s)ḱeh₃w-ō ~ *(s)ḱuh₃-nés
This is the oldest form recorded for these English words. No English word family is recorded for Proto-Indo-European (s)ḱeh₃w-ō ~ *(s)ḱuh₃-nés beyond them yet.
Etymograph / Proto-Indo-European (s)ḱeh₃w-ō ~ *(s)ḱuh₃-nés