The blue picardy spaniel is closely related to the picardy spaniel, though experts still debate whether it's related to the british setters or not. It might be so, but on the other hand old blackish (perhaps roaned?) dogs have been found in Picardie in France for a long time - this type of dog may have been the origin for the blue-roaned picardy spaniel.
Many french gundogs were all but extinct due to crossbreeding with other breeds in the early 1900s, but using illustrations from the 1800s, breeders tried to re-create the old breeds. The picardy spaniel and blue picardy spaniel were divided into two breeds, and the blue picardy spaniel got its first standard in 1938.
The breed is used as a pointer and retriever, and is very rare outside its area of origin.

The blue picardy spaniel should be well built, with a rather short back and somewhat falling croup. The head is rather broad with moderate stop, and square muzzle. The ears are set above the eyes, thick and well covered with hair. The angulation is moderate, with thick, tight paws. The coat is slightly wavy with feathers on legs, body and tail. The colour is always blue roan.