A Grand Griffon Vendéen is a breed of hunting dog originating in France. It existed as early as the 16th Century, and was the first of the Vendée griffons to be bred. It is a descendant of the Canis Segusius used by the Gauls, through the so-called King's whites and the Griffon Fauve de Bretagne, which is also an ancestor of the Basset Fauve de Bretagne.
Other Vendee griffons have been bred
The Grand Griffon Vendee was the first so there must be others to follow it. I think the system got it wrong because the context is worded ambiguously