voltairian

from The Century Dictionary.

• Of or pertaining to Voltaire (François Maric Arouet, who when about 25 years old took the name of Voltaire, said to be an anagram of “Arouet, 1. j.” (that is, French le jeune, the younger)), a famous French poet, dramatist, and historian (1694-1778); resembling Voltaire.
• noun One who advocates the princϊples of Voltaire.