Courtesy titles in the United Kingdom
Forms of address for close relatives of peers / From Wikipedia, the free encyclopedia
A courtesy title is a form of address and/or reference in systems of nobility used for children, former wives and other close relatives of a peer, as well as certain officials such as some judges and members of the Scottish gentry. These styles are used "by courtesy" in the sense that persons referred to by these titles do not in law hold the substantive title. There are several different kinds of courtesy titles in the British peerage system.