For nearly a century the generally accepted account of the origin of the Seminole has been “that the first group of Seminoles came into Florida in 1750, under a chief named Secoffee,” to quote Dr. John R. Swanton, chief contemporary authority on their origins and early history, whose source is the anthropologist Daniel G. Brinton, although Dr. Swanton states that he does not know Brinton’s authority.
Porter, Kenneth W.
"The Founder of the Seminole Nation,"
Florida Historical Quarterly: Vol. 27
, Article 5.
Available at: https://stars.library.ucf.edu/fhq/vol27/iss4/5