Welsh eog

← Breton eog (cognate)

← Proto-Brythonic *esāx (inherited)

← Proto-Celtic *esoxs (inherited)

← Cornish ehog (cognate)

← Old Irish eo (cognate)

← Middle Welsh ehawc (inherited)

→ Irish eo (cognate)

→ Scottish Gaelic eo (cognate)

→ Ancient Greek ἴσοξ (cognate)

→ Latin esox (cognate)