That there was a period of just 3 giddy weeks of English history between the last Viking invasion being successfully defeated and the first Norman invasion being successful.
Maybe everyone who did English history already knew this, but I'm just catching up on the Dark ages at the mo.
That was my favourite pub quiz moment.
Q. Where did King Harold do battle against an invading army on <date and month> 1066?
I thought, that's much too easy and obvious. "Stamford Bridge " call I. Rest of team were just saying "don't be daft, it's Hastings, everyone knows that.
I didn't know the actual dates of the two battles but I insisted.
We were the only team to get that point.
We still lost.