The calendar used prior to the Gregorian Calendar. This calendar was named for Julius Caesar, who authorized its use. Used between 45 BCE and 1582 ACE, this calendar contained some flaws. Also called the Old Style calendar.
Today this term has a relatively strict meaning in that it refers to the child of a parent by the same name. In colonial times, this term was used to indicate any (usually) man or boy in the community who was younger than another by the same name. Therefore, if two John Smiths lived in a town, the younger one was called John Junior (or John Jr.). No relationship — by blood or marriage — was implied. The title could also change as time progressed; this could result in the "junior" being called John Senior later in life. See Also: Senior.