We're listing a few dos and don't of naming fictional characters―some of these are meant to be warnings, while others should provide some inspiration.
So, where does one find these age- and era-appropriate names? Well, certain small-time public libraries tend to stock local high school yearbooks that are decades old. Skimming through these should give you definite ideas of authentic names belonging to a specific era. As you go back into history, it gets slightly easier as certain names (such as Victoria and Elizabeth, or George and John) were far too common in those times.
Now, all of this may seem a bit too much because the real focus is meant to stay on the story. However, readers do complain about having to research pronunciations, as it can be a bit weary if you've got some out-of-this-world extraordinary names in there.