Pillowcase Turkey with Million Dollar Gravy

Name: Pillowcase Turkey with Million-Dollar Gravy
Ingredients: 1 turkey, 12 to 15 lb. (6 to 7.5 kg); 1 yellow onion, coarsely chopped; 3 celery stalks, coarsely chopped; 1 lemon, quartered; 24 Tbs. (3 sticks) (12 oz./375 g) unsalted butter, at room temperature; Kosher salt and freshly ground pepper; 8 smoked bacon slices; 2 cups (16 fl. oz./500 ml) red wine, plus more as needed; 1 1/2 cups (12 fl. oz./375 ml) chicken broth, plus more as needed; 6 whole peppercorns; 10 sprigs fresh flat-leaf parsley; 1 bunch fresh thyme; 2 bay leaves