courtesy title
a title that does not have legal significance but rather is used through custom or courtesy
marquess
hereditary rank in various European peerages
Duchess of Cambridge
a courtesy title in the United Kingdom for the wife of Duke of Cambridge
Primacy of the Diocese of Toledo
primacy covering the Iberian Peninsula
courtesy titles in the United Kingdom
use of courtesy titles in the United Kingdom
Esquire
honorific title
primate
high-ranking bishop in certain Christian churches