There is a few different ways to get a name.
Some traditions have the leader of the group, tribe or coven, name the individual based on their characteristics and mannerisms. I think this was the most widely used method.
Then there is using a nickname, something that perhaps has been around you for some time.
Sometimes it is right at initiation, as you are being born into the Craft, youself or a memberof the group is struck with a name due to a vision or based on some sort of wildlife present at the time.
You could choose your own name, (and this used to be unheard of really, one doesn't name onesself) chosen specifically for what sort of energy you wish to embrace in your life. This is what I did.
You could also use numerology in the name so that the letters add up to your birth number or a number that brings you power. Additionally you could make up a name, something that doesn't sound like a language you know, maybe it could read the same way forward and back wards like >maram< Or the name reads only in a mirror=rorrim. See where that went? Pretty cool Rorrim!
Anyway, food for thought.
Den of the Firebird
Out here in the perimeter there are no stars, out here we is stoned...Immaculate.