The word "courtesy" means polite behavior that shows respect for other people.
Thus you would use a courtesy title when you were meeting people formally or introducing them to others.
The term began to be used as a title of courtesy before a man's surname during the middle of the 15th century.
owner
No, just use one space.
sama or san
a persons title
The title is purely a matter of courtesy or respect. It has no legal status.
If you mean like the word Mister, then you can use Signore. (it is abbreviated as "Sig.") Signora for women (abbreviated "Sig.ra").
Mademoiselle is the French word for Miss. Used as a courtesy title before the surname or full name of a girl or an unmarried woman in a French-speaking area.
Usually after a persons title there is a period (.)
The term "Miss" is a polite form of address, and before a full name (e.g. Miss Mary Smith) indicates that the woman is unmarried. This comes from the courtesy title "Mistress" (which has a different modern connotation).
salesperson
The correct spelling for the French courtesy title is monsieur (my lord, mister, abbreviated M'sieur).