Gentleman > define

(n.) One of gentle or refined manners; a well-bred man.
(n.) A man, irrespective of condition; -- used especially in the plural (= citizens; people), in addressing men in popular assemblies, etc.
(n.) One who bears arms, but has no title.
(n.) A man well born; one of good family; one above the condition of a yeoman.
(n.) The servant of a man of rank.

by Webster's Revised Unabridged Dictionary

A man of refinement.
A manservant who acts as a personal attendant to his employer.
- usage: "Jeeves was Bertie Wooster's man"
- synonyms: valet, valet de chambre, gentleman's gentleman, man