There is debate about when island residents first started making the jumpers. Some stitch patterns are believed, erroneously, to have a traditional interpretation, often of religious significance. These interpretations were fabricated by Heinz Edgar Kiewe, a yarn shop owner who noticed a chance resemblance between Aran stitches and Celtic knotwork, and assumed that Aran knitting was at least as old as, if not older than, the knitwork it resembles. He wrote a book on his suppositions, The Sacred History of Knitting, which provides most of the mythology surrounding the Aran jumper. His thesis has, however, been thoroughly debunked by many historians of knitting, including Richard Rutt, Alice Starmore and Vawn Corrigan.