Robert Fludd, also known as Robertus de Fluctibus, was a prominent English Paracelsian physician with both scientific and occult interests. He is remembered as an astrologer, mathematician, cosmologist, Qabalist and Rosicrucian.
Robert Frederick Foster of New York City, known as R. F. Foster, was a memory training promoter and the prolific writer of more than 50 nonfiction books. He wrote primarily on the rules of play and methods for successful play of card, dice, and board games. Alan Truscott wrote 20 years after his death that Foster "had been one of the great figures in whist and bridge" for 60 years.
Robert Freke Gould was a soldier, barrister and prominent Freemason and Masonic historian. He wrote a History of Freemasonry, which remains a standard reference work on the subject.
Robert Lee Frost was an American poet. His work was initially published in England before it was published in the United States. Known for his realistic depictions of rural life and his command of American colloquial speech, Frost frequently wrote about settings from rural life in New England in the early 20th century, using them to examine complex social and philosophical themes.
Robert Jacobus Fruin was a Dutch historian. A follower of Leopold von Ranke, he introduced the scientific study of history in the Netherlands when he was professor of Dutch national history at Leiden University.
Robert Gray Allen was an American businessman and a two-term Democratic member of the U.S. House of Representatives from Pennsylvania from 1937 to 1941.
Robert Green Ingersoll, nicknamed "the Great Agnostic", was an American lawyer, writer, and orator during the Golden Age of Free Thought, who campaigned in defense of agnosticism.
