I always recommend this site to people, but I don’t seem to have every done it in the blog. Since I have been benefitting from it for years, it is high time I do so!
The Dictionary of Medieval Names from European Sources
I can only think of two criticisms of this wonderful project. One, I wish they had been more persnickety about the spelling of Mediæval, and two, I wish there were more of it! In defense of the latter, I note that it is an ongoing project and they do add to it. So, the next time you or someone is flailing about for a character name, why not give it a try?
Give it a try and let me know what you think!