By Brandy McDonnellTwo-time Oscar-winning filmmaker Ron Howard recently visited his Oklahoma birthplace in Duncan - quite literally.Howard has posted on Instagram a new photo of himself standing in front of the now-shuttered building that was the Duncan hospital where he was born March 1, 1954. As previously reported, Howard is the child of two actors and Oklahoma natives, Rance Howard, who was born into a farming family in Kay County, and Jean Speegle Howard, who hailed from Duncan.