It's not easy to give you an unequivocal replay. It seems, actually, Sivignano but it's strange that the registrar didn't report the province (being this place so distant from Quadrelle). It could be Sicignano too (Sicignano degli Alburni, province of Salerno), not so close to Nola, but in the same region. For the second question it's, for me, even more dubious. It could be a surname (Merita Di Barile or Merita Di Barde) or it could indicate a provenance (Barile in Potenza province, for example).
Sorry, but i can't be helpul to you.