Muhammad ibn Muhammad al-Idrisi
Muhammad ibn Muhammad al-Idrisi
The Arab geographer Muhammad ibn Muhammad al-Idrisi (1100-1165) wrote the Book of Roger, a world geography, for King Roger II of Sicily. His work, marking the end of the classical age of Arab geography, sums up much of its achievement.
Al-Idrisi was born in Ceuta in Morocco, a descendant of the sharifian Hammudid dynasty, which had ruled over Málaga until 1057 and over Ceuta and Tangier until 1084. He studied at Cordova, the center of scholarship in Moslem Spain. In his youth he traveled widely, visiting Asia Minor, North Africa, Spain, France, and probably the English coast. At the invitation of Roger II, Norman king of Sicily, he went, not later than 1144, to live at the latter's court in Palermo. Roger's motives in inviting him may have been partly political. Al-Idrisi, as a descendant of a dynasty ruling in Moslem Spain and North Africa, and having an intimate knowledge of these regions, must have seemed a useful tool in Roger's designs on establishing his hegemony over the western Mediterranean.
Roger also had, however, a keen theoretical interest in geography. Since 1139 he had sponsored an ambitious project for a world geography to be based on the Greek, Latin, and Arabic geographical literature as well as on contemporary reports and research. He appointed a commission to gather and sift the material. Al-Idrisi soon became its leading member and in this function developed into one of the great Arab geographers.
Book of Roger
At the order of the King, al-Idrisi produced a silver celestial sphere and an enormous map of the world in disk form cast on a silver base. As a commentary to it, he wrote his large geography of the world. It was completed in January 1154 and became known as the Book of Roger in recognition of the King's important role in sponsoring it.
In this work al-Idrisi divided the known world, in accordance with the Greek tradition, into seven climes and described each clime in detail moving from west to east. A world map and 70 sectional maps accompany the description. His conception of the world as reflected in the maps is more influenced by the Ptolemaic than the Arab tradition. Al-Idrisi used the geography of Ptolemy and many works of the Arab geographers as sources, though some important ones escaped him.
Al-Idrisi also relied on reports of contemporary travelers and, for the regions he had visited, on his own observations. Quite original and generally precise is his description of the countries of Europe, for which he had to rely almost exclusively on contemporary reports. Although an abridged version of the Book of Roger was published in Rome in 1592 and a Latin translation of it in 1619, the full text has never been edited. A complete edition was under preparation in Italy in the early 1970s.
After the death of Roger in 1154, al-Idrisi produced an enlarged version of his geography for Roger's son and successor, William I. This work is lost. Al-Idrisi left Sicily, perhaps as a result of the anti-Moslem riots in Palermo in 1161. Later he composed a shorter compendium of world geography which is extant in manuscript. Al-Idrisi also wrote a pharmacological treatise and some poetry. According to a conjecture on the basis of a poor source, he died in Ceuta in 1165.
The section of al-Idrisi's geography on India and the neighboring countries was translated into English by S. Maqbul Ahmad as Al-Sharif al-Idrisi: India and the Neighbouring Territories (1960). It contains biographical notes and a discussion of al-Idrisi's method. □
"Muhammad ibn Muhammad al-Idrisi." Encyclopedia of World Biography. . Encyclopedia.com. (January 18, 2019). https://www.encyclopedia.com/history/encyclopedias-almanacs-transcripts-and-maps/muhammad-ibn-muhammad-al-idrisi
"Muhammad ibn Muhammad al-Idrisi." Encyclopedia of World Biography. . Retrieved January 18, 2019 from Encyclopedia.com: https://www.encyclopedia.com/history/encyclopedias-almanacs-transcripts-and-maps/muhammad-ibn-muhammad-al-idrisi
Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).
Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.
Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:
Modern Language Association
The Chicago Manual of Style
American Psychological Association
- Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
- In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.