Well, if you pin down what aspects you want in your fanfic, you can use things like wikipedia to sort out a lot of stuff. (Also, if you have access as a student or whatever, the Oxford English dictionary is brilliant for particular terms and their usage over time.) But you’ll have to make some choices based on what you think works best–cuz there’s not just one answer unless it’s in the show itself. (And they’ve now called Belle’s home a village, town, and kingdom at various points. Her intended was Sir Gaston and her father based on the credits Sir Maurice. That’s what we’ve got to go on pretty much.)
Keeper of Belle's Gold magic, sand dollar, cloaks, purple FTL outfit, spell scroll, library key, copy of Romeo and Juliet, and cry-muffling pillow, Rumple's doll, overcoat, and strength, and The Timeline. My spreadsheet: https://drive.google.com/file/d/0B6r8CySCCWd9R0RUNm4xR3RhMEU/view?usp=sharing