"This is his final Season"
was the name given, from the 17th Century onwards, to a series of events held by the British social elite, mainly between Easter and late Summer.
Traditionally, the Season ended on August 12th, the start of the grouse-shooting season.
During the Season, rural aristocratic families took up residence in London in order to introduce sons and daughters of marriageable age into society.
Important events of the Season included Royal Ascot, the Cowes Regatta and The Boat Race.