Rubáiyát of Omar Khayyám is the title that Edward FitzGerald gave to his 1859 translation from Persian to English of a selection of quatrains () attributed to Omar Khayyam (1048–1131), dubbed "the Astronomer-Poet of Persia". Although commercially unsuccessful at first, FitzGerald's work was popularised from 1861 onward by Whitley Stokes, and the work came to be greatly admired by the Pre-Raphaelites in England. FitzGerald had a third edition printed in 1872, which increased interest in the work in the United States. By the 1880s, the book was extremely popular throughout the English-speaking world, to the extent that numerous "Omar Khayyam clubs" were formed and there was a " cult of the Rubaiyat". FitzGerald's work has been published in several hundred editions and has inspired similar translation efforts in English, Hindi and in many other languages. Sources The authenticity of the poetry attributed to Omar Khayyam is highly uncertain. Khayyam was famous during his lifetime not as a poet but as an astronomer and mathematician. The earliest reference to his having written poetry is found in his biography by al-Isfahani, written 43 years after his death. This view is reinforced by other medieval historians such as Shahrazuri (1201) and Al-Qifti (1255). Parts of the Rubaiyat appear as incidental quotations from Omar in early works of biography and in anthologies. These include works of Razi (ca. 1160–1210), Daya (1230), Juvayni (ca. 1226–1283), and Jajarmi (1340). Also, five quatrains assigned to Khayyam in somewhat later sources appear in Zahiri Samarqandi's Sindbad-Nameh (before 1160) without attribution. The number of quatrains attributed to him in more recent collections varies from about 1,200 (according to Saeed Nafisi) to more than 2,000. Skeptical scholars point out that the entire tradition may be pseudepigraphic. The extant manuscripts containing collections attributed to Omar are dated much too late to enable a reconstruction of a body of authentic verses. In the 1930s, Iranian scholars, notably Mohammad-Ali Foroughi, attempted to reconstruct a core of authentic verses from scattered quotes by authors of the 13th and 14th centuries, ignoring the younger manuscript tradition. After World War II, reconstruction efforts were significantly delayed by two clever forgeries. De Blois (2004) is pessimistic, suggesting that contemporary scholarship has not advanced beyond the situation of the 1930s, when Hans Heinrich Schaeder commented that the name of Omar Khayyam "is to be struck out from the history of Persian literature". A feature of the more recent