Enjoyed your post! I read a bit about your g-grandfather on wikipedia:
It's probable or possible that your g-grandfather and my grandfather (USNavy 1922-1946) knew each other. They both officers were serving in Shanghai China when the Japanese invasion occurred in 1937. At that time, my grandfather was a captain in the submarine service, and served on the U.S.S. Tarpon (SS-175)
. Your 1911 is an awesome treasure. Don't shoot it!