Your interest in “historical overlap” reminds me of Justice Oliver Wendell Holmes. In his youth, he clerked for a man who had served as secretary to George Washington. And when Holmes was himself an old man, one of his clerks was Alger Hiss.
Therefore, it is said about Justice Holmes: He knew a man who worked for George Washington, and he knew a man who worked for Joe Stalin!
I love that kind of stuff! Thanks for the anecdote!