I believe that you might be mistaken in identifying Pyne as the nephew of Momo Pyne. I believe it was his son, Percy Rivington Pyne 2nd Class of 1903 (1881 - 1950). It is an easy mistake to make as there have been six members of the Pyne family to carry the name Percy Rivington Pyne. Please see: https://en.wikipedia.org/wi...

Thanks for an interesting article.

Robert S. Babecki ’77