Apr 22 Muhammad, Arabic prophet and founder of Islam (Quran), born in Mecca, Hejaz, Arabia (d. 632 AD) (approximate dates)
Apr 26 Muhammad, founder of Islam, according to the Shi'a sect. Other sources suggest birth date of April 20. Observed according to the Islamic lunar calendar (d. 632)
Gregory I
Gregory XIII
Julius II
Julius III
Leo X
Pius V