His bloodlines all trace back to the early registered dogs of the studbook, and to J. M. Wilson's Cap, whose name occurs 16 times within seven generations in his pedigree. Wiston Cap sired three Supreme Champions and is grand-sire of three others, one of whom was E. W. Edwards' Bill, who won the championship twice. Sheila, the first civilian dog ever awarded the PDSA Dicken medal, for her part in rescuing the crew of a B-17 Flying Fortress, which crashed into the Cheviot Hills, Northumberland. Sheila, the first civilian dog ever awarded the PDSA Dicken medal, for her part in rescuing the crew of a B-17 Flying Fortress, which crashed into the Cheviot Hills, Northumberland.