Henry Flagler
Henry Morrison Flagler was an American industrialist and a founder of Standard Oil. He was also a key figure in the development of the Atlantic coast of Florida and founder of what became the Florida East Coast Railway. He is known as the father of both Miami and Palm Beach, Florida.
Flagler was born in Hopewell, New York, the son of Isaac Flagler, a Presbyterian minister, and Elizabeth Caldwell Morrison Harkness Flagler. Henry had a stepbrother future tycoon Stephen V. Harkness, who had become Elizabeths stepson when she married David Harkness of Milan, Ohio and a halfbrother, Daniel M. Harkness, Elizabeths own son with David. Widowed by Davids death, Elizabeth had brought her family back to upstate New York and there married Isaac Flagler.
Source: Wikipedia