consort
spouse of a ruler
mistress
female who is in a sexual relationship, where the other or both parties to the relationship are also in another committed relationship (usually marriage)
Queen Consort of France
Title held by the Consort of the King of France
prince consort
title usually held by a spouse of a female monarch
concubine
a legal partner lesser than a husband or wife
Queen Consort of Bulgaria
Title held by the female spouse of the King of Bulgaria
First Gentleman
honorary title of the husband of a president or head of state
princess consort
spouse of a prince
Consort of the United Kingdom
Position of the spouse of a British monarch
Queen Consort of Spain
Title held by the wife of the King of Spain
Duchess of Brabant
consort of the Duke of Brabant
Princess of Asturias
Nobilary rank in Spain
First Lady
honorary title of the wife of a president or head of state