Murat writes of his pleasure at the publication of his latest work: Exposition des Principes du Gouvernement Républicain, tel qu'il a été Perfectionné en Amérique. Murat also mentions the arrival in London of the strange Andrew Vail, who was to be acting U. S. Ambassador to the Court of Saint James, but who never presented his papers, etc.

Murat was the son of Joachim Murat, King of Naples, when his father lost the throne in 1815, young Murat sought refuge with his mother, a sister of Napoleon 1, in Lower Austria, here he received a good education, but in 1821 left Europe for the United States, on his arrival in New York he made immediate application for naturalization. Murat settled in Tallahassee, Florida during Florida's territorial and early years of statehood. During the early phase of the Seminole Wars, and for the three years prior to hostilities he was a lieutenant colonel of Florida's militia.

In 1825 Murat bought a tract of land he would call Lipona Plantation 15 miles east of Tallahassee (Lipona is an anagram of Napoli (Naples), the kingdom over which he was once destined to rule). His purchase was probably due in part to the July 4, 1825 Lafayette Land Grant which gave Gilbert du Motier, marquis de Lafayette, 36 square miles of what would become Tallahassee. This land grant also provided an opportunity for several French settlers who were acquainted with Lafayette to move to the area and restart their lives.

In 1824, Murat was elected alderman of the city, and mayor in the following year, in 1826 he was appointed postmaster, which office he held until 1838. In 1826, Murat met and married on July 12, at Tallahassee, Florida Catherine Daingerfield Willis Gray, his wife was the great-grandniece of George Washington. The couple had no children, Murat died in Wasceissa, Jefferson County, Florida, on April 15, 1847.