You may think you know Santa, but there's a lot more to the legend than a bag full of presents. What follows is a selective history of St. Nick and how he came to be known as the jolly round man in the iconic red suit.
PHOTOS: A look at the evolution of Santa Claus
The man we've come to identify at St. Nicholas was born in the third century in what is now Turkey. He eventually became a bishop in the early church and was known for helping the poor and the sick and for being a protector of sailors and children. Tales of his good works, including gifts to the poor, start to spread throughout Europe.
Italian sailors or merchants allegedly steal the remains of St. Nicholas from his shrine at a church in Myra (located in present-day Turkey). They bring them to Bari, Italy, increasing the saint's popularity in Europe. To this day, the remains are enshrined in the 11th century basilica of San Nicola in Bari.
St. Nicholas becomes one of the most popular saints in Europe. People celebrate his feast on Dec. 6, which, legend has it, is the anniversary of his death. Even during the Protestant Reformation, when the adoration of saints is discouraged, St. Nicholas remains a popular saint in Holland.
Dutch immigrants bring stories of St. Nicholas to the United States, referring to him as Sinter Klaas, which eventually evolves into Santa Claus. His outfits vary; garments include a red waistcoat (inspired by the red cloak that bishops wore), Flemish trunk hose, a blue three-cornered hat, yellow stockings and a broad-brimmed hat.
The Dutch in Pennsylvania speak of a figure named Belsnickle or "Kris Kringle, "derived from the German "Christkind" (Christ child). The stories say that Belsnickle travels the countryside, ringing a bell, and delivering small gifts to the good children and spanking the bad ones. (Similarly, in Germany during Christmas time, the Christkind, or an angel is believed to travel to children's homes and deliver gifts.)
Episcopal minister Clement Clarke Moore writes a poem titled "An Account of a Visit From St. Nicholas" for his three daughters. Moore portrays Santa as a "right jolly old elf" who flies from house to house on Christmas Eve. Moore's poem becomes popular and the basis for how Santa is characterized in the U.S. "Eight tiny reindeer" are immortalized.
Major publications begin to create separate sections for holiday shopping advertisements. These ads feature images of a large man with a white beard in a red suit similar to the Santa depicted in the Moore poem. In 1841 a shop in Philadelphia uses a life-size Santa Claus model to draw thousands of children to the store.
Political cartoonist Thomas Nast draws a picture of Santa Claus to accompany "An Account of a Visit From St. Nicholas." The illustration runs in Harper's Weekly and depicts Santa with a portly figure, a white beard, a fur-trimmed red suit and a sack full of children's toys.
The Salvation Army begins dressing unemployed men in Santa suits to solicit donations in New York.
Illustrator Haddon Sundblom draws a series of Santa images for the Coca-Cola Co. Used in all the company's Christmas advertisements, the character becomes the modern-day version of Santa.