leereich said
I am trying to contact grape breeder David Johnson. Can anyone help?

Lee, welcome to our forum.  I'm excited at the prospect of seeing what you have to share.

I don't know David Johnson, but it seems he's associated with Featherstone Estate Winery which has telephone and email contact information, they'd likely be able to get you in touch with him: http://www.featherstonewinery......#winemaker