Jimbo wrote:

I did a quick search in google and found no evidence that anyone named Leonard III ever existed, much less that he was a brilliant tactician in the 100 Years War. I've removed it for now, and unless someone has a source, I think it should stay out."

We have very similar advice to that on Wikipedia, at: http://www.wikipedia.org/wiki/Wikipedia:verifiability

We also have very similar discussion to that taking place here at: http://www.wikipedia.org/wiki/Wikipedia_talk:verifiability

and a related subpage: http://www.wikipedia.org/wiki/Wikipedia_talk:Verifiability/Dates

All very much worth reading. If there are any points made here not adequately addressed there, it would be great if someone could comment appropriately.

Cheers, -Martin "MyRedDice" Harper