Oh my, I can't believe that I am the first to comment on this name. I thought it was more popular than this. I just considered a really awesome name to go beside it (well, awesome in MY own opinion!) "Tristen Zaire". It's beautimous! :P
This specific spelling is of Celtic origin and it means loud noise. My son is Tristen William and he has been loud since the day he was born. ;) I also love the combination of the 2 names together. They flow well.