Faroese literature in the traditional sense of the word has only really developed in the past 100–200 years. This is mainly because the Faroese language was not written down in a standardised format until 1890 (in 1854 Venceslaus Ulricus Hammershaimb published a written standard for Modern Faroese that exists to this day. He produced orthography consistent with a continuous written tradition extending back to Old Norse). The Danish language was also encouraged at the expense of Faroese. Nevertheless, the Faroes have produced several authors and poets. The most famous of these authors are Jørgen-Frantz Jacobsen (known for his sole novel "Barbara") and William Heinesen. Both authors wrote in Danish. Other famous authors from the Faroes include Heðin Brú ("The Old Man and His Sons") and Jóanes Nielsen. Poets include the brothers Janus and Hans Andreas Djurhuus, and Rói Patursson.