Santa Who? is a 'history' of how Santa Claus came to be Santa Claus. In other words, how the modern, American version of Santa Claus came to be what he is today from various ancient traditions and lore. In Santa Who? Gail Gibbons draws upon many cultures to tell the rich history of the Christmas gift-giver. You may be familiar with a few of these facts, but chances are that you might just learn something new about Santa.