A Dictionary of the Older Scottish Tongue (up to 1700)
Ben, J.Descr. Orchad.  Descriptio insularum Orchadiarum. Ben, John; MS NLS Adv. 33.2.3, fol. 24; Adv. 33.3.20, fol. 35, two MSS, the first copied by Sir James Balfour 1642, the second by Sir Robert Sibbald c1700. Printed in Barry, George: History of the Orkney Islands, Edinburgh, 1805. p 433ff.