An outstanding man of science and literature, diplomat and politician, historian and physician, Lisan ad-Din Ibn al-Khatib (1313-1374) played an important role in the cultural and political life of the medieval Muslim Spain. In his impressive scientific and literary legacy he managed for present to the generations to come about 60 books and treaties on medicine and science, philosophy and poetry, political and social studies, that is why his Muslim contemporaries called him “al-‘Allama” (“the greatest scientist”), and the Spaniards gave him an honorary title of “el Poligrafo” - “the Encyclopaedist”. The history and historiography of the medieval Muslim West - Al-Andalus and al-Maghreb - attracted a special attention of Ibn al-Khatib, who succeeded in creating a unique panorama of religious, social and political life of his motherland - the land of Granada, which under the Nasrid dynasty (of the 13 th-15 th CC.) became the last stronghold of the realm of Islam within the Iberian Peninsula.