Eugene Pignat de Bellard was an American physician giving his services to the oil industry of the area of Maracaibo .
He was the son of Eugene Pignat de Bellard and Mercedes Pietri Boulton .
Eugene Pignat de Bellard was an American Eugene Pignat de Bellard giving Eugene Pignat de Bellard 's services to the oil industry of the area of Maracaibo .
He was the son of Eugene Pignat de Bellard and Mercedes Pietri Boulton .