"The bow-wow theory (link) is the one based on onomatopoeia. Animals make a whole slew of different sounds in different languages."

It may be discredited this bow-wow theory, but it seems so logic that it went from simple signal-sound communication ( like animals use) to a stage of communication where we crossed the line to communication in onomatopoeia sounds. Until that sort of got solid in basic conventional sounds/words?

[Was'nt there in the Skandinavian and Icelandic tradition this habit of being called such and so's daughter or son for a surname? (Also in Germany and the lowlands) ??]