Complex sentence: He first painted historical subjects, and had a happy talent in representing scenes from the life and manners of the old Germans, but not meeting with sufficient encouragement, he changed his style for genre painting, for which purpose he visited Italy.
Split into simpler sentences: He first painted historical subjects, and had a happy talent in representing scenes from the life and manners of the old Germans. Not meeting with sufficient encouragement, he changed his style for genre painting, for which purpose he visited Italy.