For this Luis Rex there are 1 different names on Yasni.
In the ranking of the most common first names Luis Rex is on position 4590.
Male first name (Spanish) Luis, Old High (two-part name); hlut = loud, famous, wig wrestle =, the fight that war; old German two-part name, common as a name of German and French kings and emperors in Europe
Male first name (English, German): Rex, the king, Latin (Word format); rex = king, taken from English into German, in spite of the Latin origin of the word probably only since about the 19th Century as a first name in use