Preheat oven to 450°F (230°C). Rub hens with 1 tbsp of olive oil. Lightly season with salt and pepper. Place 1 lemon wedge and 1 sprig of rosemary in each cavity. Arrange in a large roasting pan and arrange garlic cloves around hens. Roast in preheated oven for 25 minutes.
Reduce oven temp to 350°F (175°C). In mixing bowl combine wine, broth and 2 tbsp of olive oil and pour over hens. Continue roasting about 25 minutes or longer (I cooked total 1 hr 15 min), until hens are golden brown and juices run clear. Baste with pan juices every 10 minutes.
Transfer hens to platter, pouring cavity juices into the roasting pan. Tent hens to keep warm with tin foil. Transfer pan juices and garlic cloves to saucepan and boil until liquids reduce to a sauce consistency, about 6 minutes. (I mashed garlic). Cut hens in half lengthwise and arrange on plates. Spoon garlic sauce around hens. Garnish with rosemary and serve.