From Wikipedia
Hamilton Disston (August 23, 1844 – April 30, 1896) was an industrialist and real-estate developer who purchased four million acres (16,000 km²) of Florida land in 1881, an area larger than the state of Connecticut, and reportedly the most land ever purchased by a single person in world history. Disston was the son of Pennsylvania-based industrialist Henry Disston who formed Disston & Sons Saw Works, which Hamilton later ran and which was one of the largest saw manufacturing companies in the world.
Hamilton Disston's investment in the infrastructure of Florida spurred growth throughout the state. His related efforts to drain the Everglades triggered the state's first land boom with numerous towns and cities established through the area. Disston's land purchase and investments were directly responsible for creating or fostering the towns of Kissimmee, St. Cloud, Gulfport, Tarpon Springs, and indirectly aided the rapid growth of St. Petersburg, Florida. He furthermore oversaw the successful cultivation of rice and sugarcane near the Kissimmee area.
Although Disston's engineered canals aided water transport and steamboat traffic in Florida, he was ultimately unsuccessful in draining the Kissimmee River floodplain or lowering the surface water around Lake Okeechobee and in the Everglades. He was forced to sell much of his investments at a fraction of their original costs. However, his land purchase primed Florida's economy and allowed railroad magnates Henry Flagler and Henry Plant to build rail lines down the east coast of Florida, and another joining the west coast, which directly led to the domination of the tourist and citrus industries in Florida. Disston's immediate impact was in the Philadelphia area, where he was active in Republican politics and a philanthropist, but his legacy is often associated with the draining and development of Florida.
Disston City
In addition to dredging, Disston's plans included the creation of a major city in the Tampa Bay area to rival the budding city of Tampa. By 1884, he established the Lake Butler Villa Company, one of four land companies he operated. Disston founded the town of Tarpon Springs, much of which was built by Lake Butler Villa Company, including a commercial pier and two hotels, using lumber from his sawmill in Atlantic City, New Jersey. After deciding that Tarpon Springs would not become the metropolis he hoped for, Disston shifted his efforts south and established a town he called Disston City. He invested heavily in steamboats and built a wharf, a school, and the area's first hotel. In 1885, a Maryland doctor declared the area to be the healthiest in the world which drew many investors and developers including F. A. Davis, who partnered with Disston's brother, Jacob, in further developing the Pinellas peninsula, where Pinellas County was established.
In the mid-1880s, Russian developer Peter Demens was building the Orange Belt Railway across central Florida with a planned western terminus in the Tampa Bay area. On December 1, 1886, Disston offered Demens approximately 60,000 acres (240 km2) of land to stretch his railroad to Disston City. Demens countered with a demand of an additional 50,000 acres (200 km2) but Disston refused, mistakenly believing that Disston City would thrive if the railroad merely came close to the area. Instead Demens terminated his railway at St. Petersburg, which he named after Saint Petersburg, his home city in Russia. While Disston City never met Disston's expectations and became the small city of Gulfport. St. Petersburg reaped the rewards of Demen's railway and became one of the largest cities in Florida.