djct59 - found this quotation in the essay "The Life of Rob Donn" by Hew Morrison.
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Roderick Morrison of Cearvaig, near Cape Wrath, has given the only personal description we have of the bard. Roderick described him as "brown haired, brown eyed, rather pale complexioned, clear skinned, and, I would say, good-looking. When he entered a room his eye caught the whole at a glance, and the expression of his countenance always indicated much animation and energy. In figure he was rather below middle size, and stout and well formed for his size. In the month of November preceding his death, he attended the interment of an uncle of mine, who was a co-age of his. When the coffin was lowered into the grave, Robert turned to me and said, 'There is my co-age committed to earth, aged 63, and before this time next year I shall be laid down here too.' ... I have always understood him to have been particularly happy in domestic life. His wife, Janet Mackay, was a remarkably sensible woman, and so active in her habits that she kept their concerns at home in order when Robert was absent. She was a fine singer, and it was delightful to hear them in the winter evenings sing together. Two of the daughters had some turn for composing verses, and occasionally amused their father by quick replies to his impromptus, composed to any passing incident."
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The essay "The Life of Rob Donn" by Hew Morrison is in the preface to the expanded volume of poems edited by Hew Morrison and published in 1899. I looked but did not find a reference to the source of this extended quotation that Hew Morrison attributes to Roderick Morrison.
The full volume edited by Hew Morrison can be accessed here:
https://archive.org/details/songspoemsingael02donn/mode/2upHere's some relevant transcriptions from the Durness Parish Register.
Marriage
1777 - Roderick Morison alias Macuilam-macrory in Cerrauch and Mary Mackay alias ninMacAlister macuillam roy in Sartigrim were married the twenty seventh day of November.
Baptism
1797 - Roderick Morison, alias Macuilam-macrory Herdman in Cerruac near Cape wrath, and Mary Mackay his wife had a Child Baptized and named William 12th March.
Marriage
1821 - Nov. 20 - At the Manse William Morrison alias McRuarie Shep'd Parf and Merron McCulloch Saingobeg.