The Marionberry is the most widely planted blackberry variety in the world and is grown exclusively in Oregon. Here, the spring rains and sandy soils of the lush Willamette Valley have increased production to 26 million pounds since 1956 when the Marionberry was first introduced to the American consumer. In fact, the Marionberry was developed here among the fields of Marion County and from this birthplace the Marionberry hails its name. Marion County itself is named in honor of the daring “Swamp Fox” hero of the American Revolution, General Francis Marion.

http://commhum.mccneb.edu/fstdatabase/HTM_files/Fruit/marionberry.htm

In 1959 and '60, Disney produced an historical television series based on the career of General Marion in which the Swamp Fox was played by Leslie Nielsen!

"Swamp Fox! Swamp Fox!
Tail on his hat,
Nobody knows where The Swamp Fox's at.
Swamp Fox! Swamp Fox!
Hiding in the glen,
Nobody knows when he'll fight again."