I'm sorry, Frank. I'm incapable of understanding irony.
Oh, you're just funning me, Ed. Best, F
There was a book I enjoyed called Adrift in Time by Guisseppe Pazzi if I remember right. Napoleon and one of the Khans, probably Ghengis, appeared.
Just checked: Roberto Pazzi twas.
Andrew: If you like that kind of Wold Newton-style stuff, I'm wondering if you've read Philip Jose Farmer's Riverworld books. Loads of historical figures interacting with each other. This isn't exactly time travel, but the deceptively simple premise is this: every member of humanity wakes up in a place called Riverworld, all with very limited technology. Sir Richard Burton and Mark Twain try to uncover the mystery (who are the people who created this place? and how did they do it?), with the latter building a steamboat from the scant materials available, with Hermann Goering threatening to undo their progress. They're extremely enjoyable books. I read them when I was in my teens and they held up when I reread them a few years ago.
No, Ed, that stuff is unfamilar territory to me. Sounds amusing/interesting and I'll delve a little deeper certainly.