E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Waldo,
a copse between Lavant and Goodwood (Sussex). Same as weald. wold, wald, walt, a wood. (Anglo-Saxon.) The final o is about equivalent to the, as hælo, the whole, i.e. health; mænegeo, the manyi.e. multitude, etc.