I agree cms, when they mentioned the name Burdett, I thought that was going to be the Norman connection as most people with the name Burdett appear to "know" about the Norman connection.... My MIL for one.
I'm surprised no one on here has picked up on the initial newspaper obit which mentioned Grace was the niece of sir Humphrey Davy, the science connection appears to have carried on. Frank Gardener didn't even comment on it which made me think he already knew something about Grace.
I'm still puzzled on who had the original personal letters?
I thoroughly enjoyed the program, it just goes to show, if the subject is truly engaged and enthusiastic it makes viewing far more interesting.