Becker is one of the most common surnames in Saarland, so that could be tough...

I have a Jakob Becker in my tree. He was born some time before 1660 in Ensdorf (not far from Schwarzenholz) and died on 15/01/1734 in Ensdorf. His parents were Kurt Becker (ca. 1620-1666) and Entgen Rupp (ca. 1620-1685).

By the way: Kölln, Etzenhofen and Sellerbach are all parts of Köllerbach, which is now a part of Püttlingen, Regionalverband Saarbrücken (formerly Landkreis Saarbrücken).