Saint Nicholas (Greek: Ἅγιος Νικόλαος, Hagios Nikólaos, Latin: Sanctus Nicolaus); (15 March 270 – 6 December 343),[3][4] also called Nikolaos of Myra, was a historic 4th-century Christian saint and Greek[5] Bishop of Myra, in Asia Minor (modern-day Demre, Turkey).[6] Because of the many miracles attributed to his intercession, he is also known as Nikolaos the Wonderworker (Νικόλαος ὁ Θαυματουργός, Nikolaos ho Thaumaturgos). He had a reputation for secret gift-giving, such as putting coins in the shoes of those who left them out for him, a practice celebrated on his feast day―St Nicholas Day (6 December, Gregorian calendar, in Western Christianity and 19 December, Julian calendar, in Eastern Christianity);[7] and thus became the model for Santa Claus, whose modern name comes from the Dutch Sinterklaas, itself from a series of elisions and corruptions of the transliteration of “Saint Nikolaos”.
[…]
In his most famous exploit,[33] a poor man had three daughters but could not afford a proper dowry for them. This meant that they would remain unmarried and probably, in absence of any other possible employment, would have to become prostitutes. Even if they did not, unmarried maidens in those days would have been assumed as being a prostitute. Hearing of the girls’ plight, Nicholas decided to help them, but being too modest to help the family in public (or to save them the humiliation of accepting charity), he went to the house under the cover of night and threw three purses (one for each daughter) filled with gold coins through the window opening into the house.
https://en.wikipedia.org/wiki/Saint_Nicholas