Fort Tonyn, a small British fort during the American Revolution, is believed by some to have been located on Amelia Island at the site now occupied by Fort Clinch. The probable reason for this tradition is the fact that it is so located on a map prepared by W. G. F. Wallace, Esq., and included by Burton Barrs in his East Florida in the American Revolution. No substantiating evidence for this location is given by Barrs and it may be stated categorically that Wallace’s map is incorrect in this respect.
Bullen, Ripley P.
"Fort Tonyn and the Campaign of 1778,"
Florida Historical Quarterly: Vol. 29
, Article 5.
Available at: https://stars.library.ucf.edu/fhq/vol29/iss4/5