Four artists, working with stories handed down, are responsible for the Santa Claus that we know today as the “spirit of generosity and love.” The other reason we have Santa Claus and not St. Nicholas is due to Protestant hatred against Catholic Saint days.
The transformation of St. Nicholas into Father Christmas or Father January occurred first in Germany, then in countries where the Reformed Churches were in the majority, and finally in France, the feast day being celebrated on Christmas or New Year’s Day.