Proto-Germanic *erlaz

→ English earl (inherited)

→ Old English eorl (inherited)

→ Middle English erle (inherited)

→ Finnish jaarli (derived)

→ Faroese jallur (inherited)

→ Proto-Norse ᛖᚱᛁᛚᚨᛉ (inherited)

→ Icelandic jarl (derived)

→ Old Norse jarl (inherited)

→ Old Saxon erl (inherited)

→ Swedish kille (derived)