E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
The patron saint of boys, as St. Catherine is of girls. In Germany, a person assembles the children of a family or school on the 6th December (the eve of St. Nicholas), and distributes gilt nuts and sweetmeats; but if any naughty child is present, he receives the redoubtable punishment of the klaubauf. The same as Santa Claus and the Dutch Kriss Kringle (q.v.). (See SANTA KLAUS.)
St. Nicholas. Patron saint of parish clerks. This is because he was the patron of scholars, who used to be called clerks.
St. Nicholas. Patron saint of sailors, because he allayed a storm on a voyage to the Holy Land.
St. Nicholas. The patron saint of Russia.
St. Nicholas. The patron saint of Aberdeen.
St. Nicholas, in Christian art, is represented in episcopal robes, and has either three purses or golden balls, or three children, as his distinctive symbols. The three purses are in allusion to the three purses given by him to three sisters to enable them to marry. The three children allude to the legend that an Asiatic gentleman sent his three boys to school at Athens, but told them to call on St. Nicholas for his benediction; they stopped at Myra for the night, and the innkeeper, to secure their baggage, murdered them in bed, and put their mangled bodies into a pickling-tub with some pork, intending to sell the whole as such. St. Nicholas had a vision of the whole affair, and went to the inn, when the man confessed the crime, and St. Nicholas raised the murdered boys to life again. (See Hones Everyday Book, vol. i. col. 1556; Maitre Wace, Metrical Life of St. Nicholas.)
Clerks or Knights of St. Nicholas. Thieves; so called because St. Nicholas was their patron saint; not that he aided them in their wrong-doing, but because on one occasion he induced some thieves to restore their plunder. Probably St. Nicholas is simply a pun for Nick, and thieves may be called the devils clerks or knights with much propriety.
I think yonder come prancing down the hills from Kingston a couple of St. Nicholass clerks.Rowley: Match at Midnight (1633).