Author: Mollie Hunter
Alternate names: Molly Hunter; MOLLIE HUNTER; Mollie Hunter McVeigh; Maureen Mollie Hunter McIlwraith
Born: 1922 0630 Gladsmuir, East Lothian, Scotland
Died: 2012 0731 Inverness, Highland, Scotland
Bio: from https://en.wikipedia.org/wiki/Mollie_Hunter
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Maureen Mollie Hunter McIlwraith (30 June 1922 – 31 July 2012)[1] was a Scottish writer known as Mollie Hunter. She wrote fantasy for children, historical stories for young adults, and realistic novels for adults. Many of her works are inspired by Scottish history, or by Scottish or Irish folklore, with elements of magic and fantasy. 
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from meot
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In The Strongholt"1974 Dutch translation "Een toren tussen de domeinen" 1977  she names 'broches':
https://www.perplexity.ai/search/lijst-vertaling-van-broch-in-a-zpOvNu8VQ7OuWpFX2AgpYA 
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