You know, I've studied and taught history one way or another all my life, but I wouldn't be able to tell you off the top of my head and without Wikiing it the exact date for the Fire of London (it's in Charles II's reign, and early in it, that's as good as I can do), as for the plague and Henry VIII, that doesn't actually make any sense. Date of birth for Henry? Date when he acceded to the throne? (that I can do), date when he died? (that too). But it could be any of those questions. The plague came and went many times in European history — there was a virulent bout of it in London in the 1660s, but it was around on and off for centuries before that. Trafalgar and Waterloo should be a piece of piss for any British person who's taken a passing interest in history. Victoria's accession to the throne is a slightly tricky one. People identify Victoria with the entire 19th century, and it's slightly surprising to find that she came on to the scene way into the century. One that would stump most non-historians, or avid readers of history, I suspect, without looking it up, would be who came before her? Because he is a complete non-entity.
(I'm a bit bored with the never ending story Jack and will-he-won't-he, that's why I've gone totally off topic without anyone actually having invited it…)