Morning Justin,
Good spot with the BCM. Regarding the Bishop mate, W.H.Watts has two Bishop mates on chessgames.com but neither being v a female nor a lone Bishop. One was v H.L.Crawford who I think may have been
https://en.wikipedia.org/wiki/Henry_Leighton_Crawford (or one his sons with the same initials.) If it is he then in a few months pose it as a chess trivia question.
Who played in the Sussex v Middlesex 1926 match but also played for Ceylon at cricket?
Final position
William Henry Watts - H L Crawford, Sussex v Middlesex 1926