Capture in war, voluntary servitude and debt slavery became common within the British Isles before 1066. The Bodmin manumissions show both that slavery existed in 9th and 10th Century Cornwall and that many Cornish slave owners did set their slaves free. Slaves were routinely bought and sold. Running away was also common and slavery was never a major economic factor in the British Isles during the Middle Ages. Ireland and Denmark provided markets for captured Anglo-Saxon and Celtic slaves. Pope Gregory I reputedly made the pun, "Non Angli, sed Angeli" ("Not Angles, but Angels"), after a response to his query regarding the identity of a group of fair-haired Angles, slave children whom he had observed in the marketplace. After the Norman Conquest, the law no longer supported chattel slavery and slaves became part of the larger body of serfs.