Unfortunately connected to the web page on the languages of the Muskogee, Seminole, and Miccosukee Indians, is this web page "Chief Osceola's Biography" at http://www.geocities.com/bigorrin/osceola3.htm
The writer has some genealogy and family stories connected to Osceola. Unfortunately, he uses one of the worst ever references to Osceola, which is the book: "War Chief of the Seminoles" by May McNeer (Ward.) This book is so bad that at one time I use to buy every copy I saw on ebay just to get them out of circulation. What McNeer writes in this book is 95 percent hogwash.
Why is the McNeer book so bad? Because almost everything she describes can be proved wrong by historical documentation and written eyewitness accounts. McNeer is the great-granddaughter of Dr. Frederick Weedon who removed Osceola's head when the Seminole died, and kept it for a souvenir in his medical collection. McNeer writes her book on family oral tradition and not according to any historical documentation. It is a children's book written so a nine-year-old can easily read it.
Although McNeer was in possession of some artifacts belonging to Osceola, what she claims cannot always be established, and often proved to be wrong. For example: what she says happened at the discussion during Osceola's capture is different than what several eyewitness accounts recorded who were there. (General Jesup was not present at the capture, but left statements to be read to Osceola by General Hernandez. These are all very well documented.) So a lot of what McNeer says has to be suspect.
McNeer is also the only person who claims that Osceola's head was destroyed in a fire at a museum in Philidelphia in 1866, and even that is suspect.
Osceola by George Catlin. Not a very correct image because of the mountains in the back, and the two-tone colored leggings; but I put it here because not everyone is familiar with this image.