♦ He left Bath in 1890, and would never return. ♦ (in fact he never returned after that)
Seeing as this sentence is located below the 'As past of shall and will' heading, I can infer that would here means the "future-in-the-past" tense of 'will', so the meaning in the bracket is right.
Yet what if no context were given, and the sentence between the lozenges stood alone? Then is it ambiguous? How would you determine whether would meant any of the following definitions: 2, 3, or 5?
If so, the reader knows that he hopes never to return, but can't infer whether he returned or not?
2. (Expressing the conditional mood) indicating the consequence of an imagined event or situation
3. Expressing a desire or inclination
5. Expressing a conjecture, opinion, or hope