İbrahim Hakkı Erzurumi
Ibrahim Hakki Erzurumi (18 May 1703 – 22 June 1780), a popular Turkish Sufi saint of the Ottoman Empire from Erzurum in eastern Anatolia who was a polymath, mystic, poet, author, astronomer, physicist, physician, psychologist, sociologist, philosopher, Hanafi Maturidi Islamic scholar and encyclopedist.