you are comparing two distinct centuries:
11th century ---> 1000-1099 (or, 1001-1100?)
13th century ---> 1200-1299 (or, 1201-1300?)

I know. That's the stuff of fiction. I can collapse events occurring at different times into one event. 😜

great pictures by the way
Do you mind I use one? (I'll reference you as the source)

I'll take your silence as a yes