https://www.mysupersave.com/Recipes/Detail/495/Pork_Tenderloin_with_Cumberland_Sauce
Yield: 8 servings
Pork: Process lemon rind, garlic, parsley, olive oil, salt and pepper in a blender until finely chopped.  Pour into a large heavy-duty ziptop plastic bag; add tenderloins, turning to coat.  Seal and chill 30 minutes, turning once.    
Cook tenderloins, 2 at a time, in a large skillet over medium-high heat 5 minutes on each side or until browned.  Place tenderloins on a rack in a 15x10-inch jellyroll pan.  Bake at 375 F. for 15 minutes.  Let stand 10 minutes.   
Slice and serve with Cumberland Sauce.   
Cumberland Sauce: Bring 1-1/2 cups port wine, jelly, orange rind, orange juice, brown sugar, ginger, dry mustard, salt and red pepper to a boil in a large saucepan.  Reduce heat; simmer for 20 minutes, stirring often.  Blend remaining 1 cup port wine and cornstarch until smooth; add to hot mixture.  Bring to a boil over medium heat; boil, stirring constantly, 1 minute.   Pour over pork tenderloins.    
Please note that some ingredients and brands may not be available in every store.
https://www.mysupersave.com/Recipes/Detail/495/Pork_Tenderloin_with_Cumberland_Sauce