The Nuttall Encyclopedia
Sir Walter Scott's factor at Abbotsford, born in Selkirkshire; having failed in farming, entered Scott's service in 1817 and remained his trusted and faithful friend, advising him in his schemes of improvement and acting latterly as his amanuensis till his death in 1832; thereafter he was factor in Ross-shire, where he died; he had some poetic gift of his own, and contributed to the third volume of the "Minstrelsy" (1780-1845).
Wood, James, ed. Entry for 'Laidlaw, William'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/l/laidlaw-william.html. Frederick Warne & Co Ltd. London. 1900.