They were developed from Polish Merino crossed with Leicester Longwool and Lowicz. They are tangentially related to the original Leicester Longwool breed. The Devon Longwoolled ("Devon Longwool") is a breed of domestic sheep from the United Kingdom. The Leicester Longwool is an English breed of sheep. The Leicester Longwool in the 1700s was slow-growing and coarsely boned. The common fibre diameter for an Leicester Longwool is 32 to 38 micrometres (microns). They were developed by crossing Leicester Longwool with Southam Nott and Bampton Nott. The Lincoln, sometimes called the Lincoln Longwool, is a breed of sheep from England. The Leicester Longwool should be free, active and well balanced while in movement. Crossing the Comeback Sheep with a longwool breed, will produce progeny that is three-quarter bred. Like other longwool breeds, the Cotswold was often used for crossbreeding in early times. Coopworth sheep are a medium-sized, dual purpose, longwool breed, with an alert but quiet disposition. It is a longwool breed of sheep, which produces a generally large-diameter fibre.