Valentin de Boulogne
Valentin is reasonably identified as the son of a Valentin de Boulongne of Coulommiers-en-Brie. He was in Rome by 1620; he was influenced by Manfredi and Caravaggio.
Most of the attributions to him are traditional, but stylistically coherent and convincing. His 'Martyrdom of Saints Processus and Martinian' (Vatican, Rome) is documented as of 1629-30. He died in Rome in 1632.