Lomana is more of a middle name, his brother who I know also has it as part of his name.
The old Lua Lua is Tresor.
They said on swedish televison that his name was Lomana Tresor Lua-Lua and that it meant "The Extraordinary Tressure Lua-Lua". Mind, that could just as well be bullshite
I think that "Tresor" means something about Tresure, but the whole name isnt one big sentence.