Traditions and Hearthside Stories of West Cornwall, Vol. 2, by William Bottrell, [1873], at sacred-texts.com
Duffy and the Devil. Page 3.
An old droll teller of Sancreed, called Billy Foss, used to relate a story very similar to that of the guise-dance; he made no mention, however, in his droll, of any family names, nor of
any particular place in which the "Lord" dwelt, who married a . poor girl; but her name was Duffy; and the demon who worked for her, and who was also fooled by a witch through strong drink, was called Tarraway. Billy used to say, "Some who know no better, call Duffy's devil Terrytop; but his ancient and proper name is Tarraway."