Roast Turkey With Madeira Gravy

Name: Roast Turkey With Madeira Gravy
Ingredients: Turkey; 2 tablespoons chopped fresh rosemary; 1 12- to 14-pound turkey with giblets; 1/4 cup chopped fresh parsley; 2 tablespoons chopped fresh thyme; 1 onion, peeled and quartered Giblet stock & gravy; 1 1/2 teaspoons extra-virgin olive oil; 1/2 cup Madeira; 2 carrots, chopped; 1 1/2 tablespoons cornstarch mixed with 2 tablespoons water; Salt & freshly ground pepper, to taste; 1 onion, coarsely chopped; 1/4 cup dry white wine, for basting; 2 stalks celery, chopped; 3 cups reduced-sodium chicken broth; 1 tablespoon extra-virgin olive oil; 2 tablespoons finely chopped shallots