Caravaggio influenced Zubaran and thus Velasquez and so Manet. Connection? use of light as a compositional device, the use of black and there fore contrast ( if one uses black then contrast is a given in most cases). These are powerful images. The focal point is obvious if the sorry is not. In some there seems to be a lack of emotion like Caravaggio was reporting, just a by-stander.
He was a colorful passionate man. He may have committed murder at some point.
Italian, Rome, 16th to 17 century