Alfons Maria Mucha Chytilová on 10 June 1906, in Prague. The couple visited the U.S. from 1906 to 1910, during which time their daughter, Jaroslava, was born in New York City. They also had a son, Jiří, (born 12 March 1915 in Prague; died 5 April 1991 in Prague) who later became a journalist, writer, screenwriter, author of autobiographical novels and studies of the works of his father. In the U.S., Mucha expected to earn money to fund his nationalistic projects to demonstrate to Czechs that he had not "sold out". He was assisted by millionaire Charles R. Crane, who used his fortune to help promote revolutions and, after meeting Thomas Masaryk, Slavic nationalism. Alphonse and his family returned to the Czech lands and settled in Prague, where he decorated the Theater of Fine Arts, contributed his time and talent to create the murals in the Mayor's Office at the Municipal House, and other landmarks around the city. When Czechoslovakia won its independence after World War I, Mucha designed the new postage stamps, banknotes, and other government documents for the new state.
Mucha considered his publication Le Pater to be his printed masterpiece, and referred to it in the New York Sun of 5 January 1900 as what he had "put soul into". Printed on 20 December 1899, Le Pater was Mucha's occult examination of the themes of The Lord's Prayer and only 510 copies were produced.

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