Hello Richard, I too am a descendant of the Strangs from Gien. It was exciting to read your post to Bob, speaking of our history. I never knew that the French spelling of the last name was Streing. How do you know that? From the research of the Charles whom you mentioned? The details fascinate me.
I just recently became a DAR because of our patriot ancestor Daniel Strang, born 1739, son of Henry. Is he also your ancestor?