It's sad but I think we all figured this was going to be Teddy's last rodeo so I wasn't surprised when I read the title.
Just for the lulz, you could turn Harold Beaumont into a Forest Gump character where the dude inexplicitly finds himself witnessing several important historical moments throughout his life. He becomes a successful businessmen at some point and you can take it from there:
He meets members of the Habsburg family in the rump state of Danubia in some restaurant as they prepare for a speech later in the evening, drinks coffee with a relative of Sorel's in Red Paris before a huge riot breaks out, shakes the hand of the Kaiser during some significant wedding in imperial Berlin, witnesses a argument between Japanese and Vietnamese merchants in Japanese controlled Hanoi before a important assassination takes place, spends time in Italian Somalia and accidently joins a dinner party between Ethiopian and Japanese nobility, is hiking in the desert of Chad with some Bedouin guides and sees the first successful German oil drill strike black gold with whooping workers making a racket, experiences a tense car ride in Dublin and sees a British guardsmen get shot by a Irish nationalist before being escorted away for his own safety, etc.
I'm not saying to turn the TL into "Adventures with Harold", but he could be a funny recurring character we see now and then. Later, when he gets old and writes his memoirs, it becomes an instant bestseller with historians in particular marveling at how such an unassuming man could have had such an interesting life.