Hmm, don't really know. The Old Grand Dad brand was started by the Hayden family in 1840 and named in honor of their grandfather, Basil Hayden. It's been in continuous production since (as a 'medicinal' brand during Prohibition) and was sold in 1899 to the Wathen family who went on to found National Distillers. I cannot say when I first noticed the 114 on the shelves, was it a response to Rare Breed or was it the other way round?
WTRB was released in 1991, so OGD114 is definitely older.