Thats a Tough One, Your Basically asking for Viz's Translation, Most sites I Know dont bother putting Up the Liscensed Versions of Mangas if they already have the Jap Version which normally Retains the original Character names. But I do see what you mean Zatch>Gash, Tia>>>>Tio,Zeno>>>>>>>>>>>>>>>>>>>Xeon/or Was it Xion.
I Do think that Manga fox Probably has Zatch bell and Not Konjiki no gash bell.