Isn't it spelled "Lodestone", not "loadstone"
Regardless, what it comes down to is what you think sounds good. A random name generator like Admin-Sama suggested will give you a lot of different names and you will probably find a good one in time, but just think about what flows well.
And keep in mind that not everyone has a full name that sounds exceptional. I think my full name sounds natural because I'm used to it. Most people are stopped for a moment when I tell them. The point I'm trying to make is: even an odd name will start to seem natural if you give it enough time; it could even be good for character development. People would first gawk at the name, but as the character gains renown, his name could become feared or praised.