Saint nicholas has 3 different meanings across 2 categories:
a bishop in Asia Minor who is associated with Santa Claus (4th century)
the legendary patron saint of children; an imaginary being who is thought to bring presents to children at Christmas
A 4th-century Greek bishop from Myra, Anatolia, patron saint of children, mariners and the unwed among others, functioning in multiple countries as a gift-giving figure around his feast day of December 6.