What Era?

I know both games have a mishmash of elements from different eras, from medieval to Victorian, but if we had to pinpoint one era/time in specific, what would it be in your opinion?

Curiously, DD1 always gave me a Victorian/19th c. vibes, but DD2 feels more Georgian/18th c. or even earlier, which would suggest DD2 is actually a prequel in this sense.