French selon

← Old French selunc (inherited)

← Old French solonc (mention)

← Old French sulonc (mention)

← Old French sulunc (mention)

← Old French (mention)

← Old French son (mention)

← Old French long (mention)

← Old French lonc (mention)

← Latin sub (inherited)

← Latin longum (mention)

← Latin secundum (mention)

← Old Occitan segon (cognate)

→ Norman s'lon (cognate)