Giorgio Vasari's Lives On the Artists (1550) was the landmark biography focusing on secular life. Vasari created superstars of his subjects, as being the Lives became an early "bestseller". In Medieval Islamic Civilization (c. AD 750 to 1258), very similar conventional Muslim biographies of Muhammad along with other vital figures https://paymentcashflow23455.cosmicwiki.com/802591/article_under_review