The Claretian martyrs of Barbastro Historical milestone · Barbastro, Somontano de Barbastro, Huesca Fifty-one Claretian missionaries, most of them young students, were shot in August 1936 on the outskirts of the city during the first weeks of the war; the diocese lost close to eighty-seven percent of its clergy. agosto de 1936 Photo: Save (CC BY-SA 4.0) What to see and do in Barbastro