Abu Abdullah Muhammad al-Idrisi al-Qurtubi al-Hasani as-Sabti, or simply al-Idrisi, was a Muslim geographer and cartographer who served in the court of King Roger II at Palermo, Sicily. Muhammad al-Idrisi was born in Ceuta, then belonging to the Almoravid dynasty. He created the Tabula Rogeriana, one of the most advanced medieval world maps.