Topic · 1830–1930
The Flaglers
From foundational partnerships in the North to the railways and hotels that opened Florida’s Atlantic coast, the Flagler story traces an ambitious enterprise and its enduring civic and philanthropic legacy.
Standard Oil and the Making of Florida
At a glance
The story behind the legacy
Henry Flagler and Stephen V. Harkness met J.D. Rockefeller in Bellevue, Ohio.
From there they went on to found Standard Oil along with Rockefeller along with three other founders.
Flagler’s second career was developing Florida.
When history looks back at Henry Flagler, he is most frequently celebrated as the visionary baron who single-handedly conquered the wilderness of Florida, laying down thousands of miles of steel tracks and constructing palatial luxury resorts. But long before he became the master of the Florida East Coast Railway, Flagler’s true genius lay in his role as the ultimate corporate matchmaker.
Standard Oil was not built by solitary geniuses. Rather, it was engineered through a tight-knit web of family loyalty, regional migration, and massive venture capital—a web in which Henry Flagler served as the indispensable connective tissue. By leveraging his deep personal ties to his extended Harkness family in Bellevue, Ohio, Flagler managed to bridge their immense wealth with the raw operational ambition of John D. Rockefeller, forever altering the course of American industry.
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The Two Henrys in Florida
Henry Flagler and Henry Plant were both trying to develop Florida at the same time.
By Don C. Schueler4 min readNovember 7, 2026
Read the story
November 7, 2026
Robber Baron – Yes or No?
Did the Gilded Age have robber barons? Certainly, much like the current era.
By Don C. Schueler6 min readLate Industrial Era · 1910sRead the story
November 7, 2026
Palm Beach, Florida – Flagler’s Vision
Henry Flagler developed Florida as a second career after founding Standard Oil with Rockefeller.
By Don C. Schueler3 min readLate Industrial Era · 1900sRead the story
November 7, 2026
Henry Flagler’s two favorites
Henry is quoted near his death as saying two of his favorites on the earth were his wife Mary Lily and his dog Delos.
By Don C. Schueler1 min readRead the story
November 7, 2026
Ponce de León Hotel – Henry Flagler
The Ponce de Leon Hotel, also known as The Ponce, was an exclusive luxury hotel in St. Augustine, Florida.
By Don C. Schueler10 min readGilded Age · 1880sRead the story
November 7, 2026
Flagler’s Satanstoe aka “Lawn Beach” Retreat
Henry was deeply affected by the death of his wife, Mary Harkness Flagler, in 1881.
By Don C. Schueler3 min readGilded Age · 1880sRead the story
November 7, 2026
Railcars #90 and #91 – Henry Flagler’s “Jets”
As one might expect since he was building railroads, Henry Flagler had his own private railcars.
By Don C. Schueler3 min readLate Industrial Era · 1910sRead the story
November 7, 2026
Where did all the money go?
The Standard Oil fortune was a tidal wave of cash that either built the foundations of modern America or dissolved into a haze of eccentric scandals, proving that inheriting a billion dollars is often the quickest way to lose your mind.
By Don C. Schueler9 min readLate Industrial Era · 1910sRead the story
November 7, 2026
Whitehall – Flagler’s Palm Beach Cottage
Henry Flagler married his third wife, Mary Lily Kenan in 1901. She was 34, and Henry was 72, a 38-year difference.
By Don C. Schueler3 min readLate Industrial Era · 1900sRead the story
November 7, 2026
The Tragic Life of Ida Alice Shourds Flagler: Madness, Money, and a $300 Million Divorce
The Price of Madness: Ida Alice Flagler and the $2 Million Settlement. Ida Alice Flagler was born in 1848 and grew up in Philadelphia.
By Don C. Schueler3 min readGilded Age · 1880sRead the story
November 7, 2026
Cheat Sheet
All the names and relationships in the Flagler and Harkness families can certainly get very confusing.
By Don C. Schueler1 min readRead the story
November 7, 2026
The Day Henry Flagler and Will Harkness returned to Bellevue, Ohio
The last time Henry Flagler visited Bellevue was in October 1903 with Will L. Harkness.
By Don C. Schueler4 min readLate Industrial Era · 1900sRead the story
November 7, 2026
Flagler Mausoleum – St. Augustine, FL
Jennie Louise Flagler Benedict was the daughter of Henry Flagler. On March 25, 1889, Jennie passed away from childbirth complications while on the way to visit her father.
By Don C. Schueler3 min readGilded Age · 1880sRead the story
November 7, 2026
St. Augustine, Florida – Flagler’s start in Florida
The seeds for Henry Flagler’s “drift south” from the cold winters of Ohio and New York were likely started by Henry’s first wife Mary Harkness.
By Don C. Schueler4 min readGilded Age · 1880sRead the story
November 7, 2026
Harry Harkness Flagler
Harry Harkness Flagler was the only son of Henry M. Flagler and Mary Harkness Flagler.
By Don C. Schueler7 min readGilded Age · 1880sRead the story
November 7, 2026
Henry M. Flagler
Click to see how they were all related! Henry Morrison Flagler (January 2, 1830 – May 20, 1913) was an American industrialist and a founder of Standard Oil, which was first based in Ohio.
By Don C. Schueler28 min readLate Industrial Era · 1900sRead the story