I think the British, especially, are more careful with biographies of their history than we are. I can't get through most American 'biographies' made, particularly, during the 1950s. I fast-forwarded through
The Long Grey Line, even with Tyrone Power and Maureen O'Hara in it, and have halted just as young Robert Francis comes in. He was, tragically, to meet his death, at 25, very soon because he recklessly decided to fly an airplane.
In doing some research on IMDb, I found the facts and chronology were totally twisted. Tyrone Power wasn't right for the role either.