Looking it up, however, I can see that anyone who names their WWI protagonist "Stanhope" has done their research.

I had to look that up. I assume you're referring to "Journey's End"? I confess complete ignorance, 'til now, of the play and the numerous cinematic adaptations. But that means I got to discover the photo of Colin Clive as Stanhope in the Wikipedia article on the play. And he replaced a very young Olivier who originated the role, and both were under the direction of James Whale! I must off to read a comprehensive biography of Whale.