Encyclopaedia Britannica — Guru Nanak

Encyclopaedia Britannica's biography of Guru Nanak; it describes him in terms as the revered founder and first Guru of Sikhism, marks his birth day uncertain (April 15?, 1469), reports the tradition divided between 1538 and 1539 for his death with 1539 the more likely, and treats his Baghdad and Mecca journeys as later hagiographical tradition.