Ahmed Zarruq (or Sheikh Shihab al-Din Abu al-Abbas Ahmed b Ahmed b Muhammad b Isa al-Barnusi al-Fasi Zarruq) (1442–1493) was a ShadhiliSufiSheikh and founder of the Zarruqiyye branch of the ShadhiliSufi order (Tariqa). He was born on the 7th June 1442 (22nd Muharram,846 of the Islamic 'Hijra' calendar) - according to Sheikh Abd Allah Gannun - in a village in the region of Tiliwan, a mountain area of Morocco. He was a contemporary of Muhammad al-Jazuli. He was a Berber of the tribe of the Barnusi who lived in an area between Fes and Taza.
He took the name 'Zarruq' (meaning 'blue') and he studied the traditional Islamic sciences such as jurisprudence, Arabic, traditions of the Prophet and wrote extensively on a number of subjects. His most famous works are first of all his Qawa’id al-Tasawwuf (The Principles of Sufism), his commentaries on Maliki jurisprudence and his commentary upon the Hikam of ibn 'Ata Allah.
He travelled East to Mecca in Tihamah and to Egypt before taking up residence in Misrata, Libya where he died in 899 (1493).
Anecdotes of Zarruq's childhood, travels and education appear in an untitled fahrasa and Fawa'id min Kunnash, the second being edited in it's arabic version. Selected passages appear in translation in: Zarruq the Sufi: a Guide in the Way and a Leader to the Truth by Ali Fahmi Khushaim (Tripoli, Libya:General Company for Publication, 1976)
Zaineb S. Istrabadi, Qawa’id al-Tasawwuf, The Principles of Sufism, annotated translation with introduction, Phd thesis with extensive information on his life, times, contemporaries and interpretation of the text (pdf-file) 
Foundations of the spiritual path by Sidi Ahmad Zarruq, translated by Hamza Yusuf (pdf-file)