Old Saxon sunu

← Proto-Germanic *sunuz (inherited)

← Proto-West Germanic *sunu (inherited)

← Proto-Indo-European *suHnús (inherited)

→ Old English sunu (cognate)

→ German Sohn (cognate)

→ German Low German Söhn (inherited)

→ Old Norse sonr (cognate)

→ Old Saxon gisunfadar (compound)