1.  Valentine's Day may have been named after Valentine of Terni, a priest who married Roman soldiers against orders from Claudius II. He was arrested and killed on February 14 in the year 269. It is said that an almond tree near his grave burst with pink flowers and all the birds chose mates, hence the term "love birds."

2.  A kiss on Valentine's Day is considered to bring good luck all year.

3.  Teachers receive the most Valentine's cards, followed by children, mothers, and wives. Children between the ages of 6-10 exchange more than 650 million Valentine cards a year.

4.  Richard Cadbury produced the first box of chocolates for Valentine's Day in the late 1800s.

5.  The first recorded Valentine was sent in February 1415 by the English duke of Orleans. He sent a love letter to his wife from his jail cell in the Tower of London after the Battle of Agincourt. It is currently on display in the British Museum.

6.  The first American Valentine was produced in 1834 by New York engraver Robert Elton.