Christmas century, Saint Nicholas was well known in the Netherlands, and the practice of gift-giving in his name spread to other parts of central and southern Europe. At the Reformation in 16th–17th-century Europe, many Protestants changed the gift bringer to the Christ Child or "Christkindl", corrupted in English to Kris Kringle, and the date of giving gifts changed from December 6 to Christmas Eve. The modern popular image of Santa Claus, however, was created in the United States, and in particular in New York. The transformation was accomplished with the aid of notable contributors including Washington Irving and the German-American cartoonist
Thomas Nast Landau, and for a time received Catholic education in New York City. When Nast converted to Protestantism remains unclear, but his conversion was likely formalized upon his marriage in 1861. (The family were practicing Episcopalians at St. Peter's in Morristown.) Nast considered the Catholic Church to be a threat to American values. According to his biographer, Fiona Deans Halloran, Nast was "intensely opposed to the encroachment of Catholic ideas into public education". When Tammany Hall proposed a new tax to support parochial Catholic schools, he was outraged. His savage 1871 cartoon "The American River Ganges", depicts Catholic bishops, guided by