Place the pork in a bowl; season with salt and pepper. Add the flour and toss to coat. Heat the oil in large skillet set over medium-high. Cook the pork in batches until nicely browned on all sides. Transfer the pork into a Dutch oven or large casserole dish. Remove all but 1 Tbsp. of oil from the skillet. Add the onion and cook 3 to 4 minutes. Mix in all remaining ingredients, except the parsley, and bring to a simmer. Pour the mixture over the pork. Cover and cook in the oven at 325 degrees F for 75 to 90 minutes, or until the pork is quite tender. Adjust seasoning and sprinkle servings of the pork with chopped parsley.