Geo Widengren

Geo Widengren (24 April 1907 – 28 January 1996) was a Swedish historian of religions, professor of history of religions at Uppsala University, orientalist and Iranist.

Widengren wrote a series of works on Iranian religions (in particular Manicheism and Zoroastrism), Islam, Judaism, Gnosticism, etc. His most popular works include ''Die Religion Irans'', published in 1965 (Les ''Religions de l'Iran'', 1968).

Widengren has been considered "one of the most famous historians of religions of the twentieth century". Provided by Wikipedia