According to Debrett’s Handbook in 2016, a gentleman’s card would traditionally give his title, rank, private or service address (bottom left) and club (bottom right) in addition to his name. Titles of peers are given with no prefix (e. g. simply “Duke of Wellington”), courtesy titles are similarly given as “Lord John Smith”, etc. , but “Hon” (for “the Honourable”) are not used (Mr, Ms, etc. being used instead). Those without titles of nobility or courtesy titles may use ecclesiastical titles, military ranks, “Professor” or “Dr”, or Mr, Ms, etc. For archbishops, bishops, deans and archdeacons, the territorial title is used (e. g. “The Bishop of London”). Men may use their forenames or initials, while a married or widowed woman may either use her husband’s name (the traditional usage) or her own. The only post-nominal letters used are those indicating membership of the armed forces (e. g. “Captain J. Smith, RN”). The Social Card, which is a modern version of the visiting card, features a person’s name, mobile phone number, and email address, with an optional residential address rarely included; family social cards include the names of parents and children.