December 26 is not only a day for Santa Claus to catch his breath but a public holiday known as Boxing Day in the United Kingdom and other British Commonwealth countries such as Australia, Canada and New Zealand.
In spite of its peculiar name, Boxing Day has nothing to do with fisticuffs, the trashing of empty boxes leftover from Christmas or the return of unwanted presents to department stores. The term is of British origin, and the Oxford English Dictionary traces its earliest print attribution to 1833, four years before Charles Dickens referred to it in “The Pickwick Papers.”
The exact roots of the holiday name are unknown, but there are two leading theories, both of which are connected to charity traditionally distributed to lower classes on the day after Christmas.
One idea is that December 26 was the day centuries ago when lords of the manor and aristocrats typically distributed “Christmas boxes” often filled with small gifts, money and leftovers from Christmas dinner to their household servants and employees, who were required to work on December 25, in recognition of good service throughout the year. These boxes were, in essence, holiday bonuses.
Another popular theory is that the Boxing Day moniker arose from the alms boxes that were placed in churches during the Advent season for the collection of monetary donations from parishioners. Clergy members distributed the contents of the boxes to the poor on December 26, which is also the feast of St. Stephen, the first Christian martyr and a figure known for acts of charity. (Ireland celebrates December 26 as St. Stephen’s Day.)
Although the practice of almsgiving on December 26 has faded with charity now being given in the weeks leading up to Christmas, the Boxing Day name has endured. These days, December 26 is a popular holiday in the United Kingdom and Commonwealth countries for watching sports such as soccer and cricket, shopping and visiting friends.
Source : https://www.history.com/