Porlockn.

1816 S. T. Coleridge Of Fragm. Kubla Khan in Christabel 53 At this moment he [sc. Coleridge] was unfortunately called out by a person on business from Porlock, and detained by him above an hour.]

1894 W. W. Story He & She 45 Just as the poet is in the height, let us call it, of his inspiration, some ‘person from Porlock’ will come in on business matters, to try on one's new shoes, perhaps, and the vision of Kubla Khan disappears beyond the horizon of recovery.

1909 E. Wharton Motor-flight through France i. ii. 16 Some climax of mystic vision, miraculously caught in visible form, and arrested, broken off, by the intrusion of the Person from Porlock—in this case, no doubt, the panic-stricken mason.

1959 Listener 1 Jan. 37/3 All the incidental distractions—the telephone-bell, the Christmas carollers at the door, the gentleman or lady ‘from Porlock’—to which one is subject.

1992 M. Stewart Stormy Petrel (BNC) 34 I would look at it again, and see if it had been totally destroyed. At least no person from Porlock was likely to interrupt me today.