Preheat Oven To 325F. Heat the olive oil over medium heat in a heavy roasting pan or Dutch oven and brown the meat well. Remove from the pan and set aside. Pour off all but 2 tablespoons fat, add the onions, carrots and celery and cook 5 minutes. Add the garlic, wine, water, lemon, salt and preserves. Replace the venison. Cover and place in the oven for 1 1/2 hours or until tender. When venison is tender, remove from the sauce, strain the sauce through a fine sieve and discard the vegetables. Skim and discard fat from the surface of the braising liquid. Add the peppercorns, cream and butter and place the sauce in a pot and simmer for 5 minutes. To serve, arrange the meat on a platter and pour over the sauce.