Lazarus of Constantinople was a monk and icon painter who lived during the last years of the iconoclast controversy, was tortured because of his profession, and eventually became a key player of the Triumph of Orthodoxy (843). The study of his life provides us with significant information about the task, the conception of art and the social status of byzantine painters in a complex period such as iconoclasm. After his death, Lazarus was canonized and his own iconography as a saint was developed and got an extensive record from Byzantine culture to the Baroque Counter-reformation. In this article I present the first overview of this monk, painter and saint.