Auctor is Latin for author or originator. The term is used in Scholasticism for a "renowned scholar", and in biological taxonomy for the scientist describing a species or other taxon. The term is widely replaced by author in English-language works.
Auctor also refers to a person who donates the genetic material used to make a clone.
Auctor is the name of a journal for postgraduate students of Classics, published from Royal Holloway (University of London).
References
Auctor Wikipedia(Text) CC BY-SA