John William Rogan (1868-1905) Sumner County, Tennessee, USA is one of 14 individuals in medical history to reach a height of eight feet or more. He was also known as Bud Rogan. John William Rogan began to grow very rapidly at the age of 13 leading to Ankylosis, and eventually he could not stand or walk. He moved around in a cart which he had made himself from his bed, pulled by goats.