Classic greek roasted leg of lamb with lemon-garlic potatoes

Ingredients

• 1 leg of lamb , bone in
• 1 head garlic
• 2 tablespoons Greek oregano
• 2 tablespoons greek thyme
• 2 tablespoons dried rosemary
• 1 cup olive oil
• 1 cup fresh lemon juice
• 4 cups dry red wine
• salt
• pepper
• 6 -8 cloves garlic , peeled
• 2 tablespoons oregano
• 2 tablespoons thyme
• 2 tablespoons rosemary
• 1 teaspoon black peppercorns
• 2 tablespoons olive oil
• 6 lbs roasting potatoes , peeled and cut lengthwise into six wedges
• 1 cup lemon juice
• water
• 1 -2 tablespoons oregano
• 2 -3 cloves garlic