Yes, there have been several men named Nicholas who eventually became saints. The best known of these was St. Nicholas of Myra.
The stories of Santa Claus go back to a man named Nicholas (that's why he is also called Saint Nicholas). That would mean he is mortal, but that's just my opinion.
Saint Nicholas or Kris Kringle
Some people think that Santa Claus started when a man named Saint Nicholas started to give out presents. Objects, and love and joy from his heart.
I find no reference to any saint named Ber-man or Berman.
The man who bought Saint Patrick as a slave was named Milchu. It is believed that Milchu was a chieftain in Ireland.
A man named: Rasputin. Hope it helped :)
There is no saint named Desmond recognized by the Catholic Church. The name Desmond is of Irish origin and means "man of the world."
Saint Nicholas, of course. Bear in mind the last Czar, Nicholas II ( and family) are considered saints in the Russian Orthodox church so Saint Nick has, well Imperial presence! In some quarters Nicholas II was arguably the wealthiest man in the world, and no trace of the Romanov money was ever found after the Revolution, I means money specifically belonging to the Imperial family.
Saint Nickolas of Myra was real. He was a 4th century Catholic bishop in Myra, a town in a Greek colony in what is now modern Turkey. Santa Claus is a fictional character very loosely based on the man Saint Nicholas. However, the real Nicholas did not live at the North Pole and had no elves, sleigh or reindeer.
Nicholas of Myra was a holy and pious man who loved children. He would sometimes give money and gifts to families who were poor ("Santa Claus") and is credited with bringing three murdered young boys back to life.
St. Nicholas of Myra (in Turkey) was a bishop and a very holy man. He did not just preach the Gospel, he lived it. He spent some time in prison because he would not renounce his faith. Much of his life he spent ministering to the poor. Nicholas was proclaimed a saint by popular acclaim long before the official Catholic canonization process was instituted in the 12th century.
Saint Nick refers to Saint Nicholas, a historical figure known for his generosity and gift-giving, particularly to children. Santa is a modern interpretation of Saint Nicholas in the form of a jolly old man who delivers gifts on Christmas Eve. While both characters share some similarities, such as the tradition of gift-giving, Santa Claus has been largely secularized and is more commonly associated with the commercial aspects of Christmas.