Mueller is a spelling variant of the German surname Müller ("miller"). In German, the letter "ü" can be replaced with "ue".

What is the meaning of Mueller?

The German word Müller means "miller" (as a profession). It is the most common family surname in Germany, Switzerland, and the French départements of Bas-Rhin and Moselle (with the spelling Müller, Mueller or Muller) and is the fifth most common surname in Austria (see List of most common surnames in Europe).

Is Illuminary a word?

Pertaining to illumination; illuminative.