Emily Post Etipedia®
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Who is a Senior, a Junior or The Second?
- A man with the same name as his father uses "Jr. after his name as long as his father is alive. He may either drop the suffix after his father's death or, if he prefers, retain it so that he won't be confused with his late father.
- When a man is named after his father who is a "Jr.," he is called "the third," once written with either the numeric 3rd or the Roman numeral III but now confined almost exclusively to the latter.
- A man named after his grandfather, uncle, or cousin uses the suffix II.
- (The wife of each of these men uses the same suffix after her name as her husband does.)
- In writing, a comma is used to separate the surname and the suffixes Jr. and Sr., though the trend is now toward dropping the comma. Junior when spelled out, is written with a lower case j.
- When a name has a numeral suffix--as in Robert Conner III--no punctuation is used.