Abu al-Abbas Ahmad ibn Khalid al-Nasiri al-Salawi, was born in Sla, Morocco and is considered to be the greatest Moroccan historian of the 19th century. He was a prominent scholar and a member of the family that founded the Nasiriyya Sufi order in the 17th century. He wrote an important multivolume history of Morocco: Kitab al-Istiqsa li-Akhbar duwal al-Maghrib al-Aqsa . The work is a general history of Morocco and the Islamic west from the Islamic conquest to the end of the 19th century. He died in 1897 shortly after having put the finishing touches to his chronicle.