For whom is marionberry named?

Marionberry:? This hybrid berry -- a cross between a blackberry, raspberry, olallieberry and chehalem -- was named for its county of origin, Marion County, Oregon. The syrup captures the essence of the marionberry, with just the right combination of sweet and pungent flavors.

http://snipurl.com/gryd

So it would seem that "marionberry" was not named after a person, unless the County of Marion was named after a person. And perhaps it was.* But then the association would be indirect and unintended. In this case, "marion" simply identifies the source of the hybrid geographically.

* Marion County History

Champoeg District was redesignated a county in 1845 and renamed Marion County in 1849 after General Francis Marion, a Revolutionary War hero.

http://snipurl.com/gryg