An odd request - no doubt. What'cha need it for? That might help in finding the right name.
'King', much the same as 'Wang' I assume, is a common surname in the English speaking world, so your sitting pretty there, Mr. King. As for your first name, well, if 'Guang' means 'light', I might suggest 'Lucien'. I have no prove but I've always assumed the name means something like 'the enlightened one', besides it's a great name, don't you think?