It originated from Saint Nicholas which evolved into Santa Claus. But if you mean the movie, a "clause" is a distinct phrase, usually one that changes the meaning of a sentence.
The House of the Rising Sun is a Buddhist country, mainly- there are different sects such as Zen, etc. - and not a Christian Country- therefore- no Santa- San.
We celibrate Christmas and Sinterklaas (Saint Nicolaas) We call SantaClaus Kerstman (Trans. Christmasman) We call Sinterklaas, Sinterklaas (looks a lot like SantakClaus) Check Wikipedia for more info