Standard Oil Trust issued to and signed by George Davidson Rogers - Also signed by H. H. Rogers and H. M. Flagler - 1897 dated Autograph Stock Certificate

Henry H. Rogers 1840-1909, Capitalist, an executive of Standard Oil, he worked closely with William Rockefeller and later worked with E. H. Harriman in his extensive railroad operations. He was a friend and financial counselor of Mark Twain. Henry M. Flagler, Capitalist and Promoter. Rockefeller once stated in court that Flagler was "the brains behind the Standard Oil Trust". He transformed Florida's once neglected beaches and swamp lands into luxurious playgrounds. 

Henry Morrison Flagler, born on January 2, 1830, in Hopewell, New York, was an American industrialist and the founder of Standard Oil, initially established in Ohio. He played a pivotal role in the development of the Atlantic coast of Florida and founded the Florida East Coast Railway. Notably, much of this railway was constructed through convict leasing. Flagler is often referred to as the “father of Miami and Palm Beach, Florida.”

Flagler’s parents were Isaac Flagler, a Presbyterian minister, and Elizabeth Caldwell (Morrison) Harkness. Elizabeth had two sons from her previous marriage to Dr. David Harkness of Milan, Ohio. Flagler’s son from his first marriage, Stephen V. Harkness, became Elizabeth’s stepson. Together, David and Elizabeth had a son named Daniel M. Harkness before his passing.

Flagler’s paternal lineage traced back to Germany, specifically the Palatinate region. His immigrant ancestor, Zacharra Flegler, initially settled in Walworth, England, before relocating to America. Flegler arrived in New York in 1710 and eventually settled in Dutchess County. It was his grandson, Solomon Flagler, who first adopted the variant spelling of the surname. Solomon had eleven children, including Isaac, Flagler’s father.