Hi Kay ! I don't have a clue if the text below is relative to your family..., you to do the research ! For myself, it has been an interesting find as I have a Campbeltown Hawthorn in my family. And although I stand to be corrected..., I'm wondering if I've not seen reference to a certain "O'Drain's Land" somewhere. ("Land" referring to a building) Could be mistaken !
The following info comes from "Kintyre... The Hidden Past" by Angus Martin. (1984) A must; to buy.
"HAWTHORN. Probably from Irish Ô Dreâin - a family first in co. Roscommon, but later, by enforced migration, found in Ulster with the anglicised forms Adrain, o Drean and Drean. Hawthorn appears to have been a Kintyre pseudo-translation, droigheann in Gaelic being 'hawthorn'. Neither (O)Drain nor Hawthorn survives in Kintyre.
John odrain in Knockmurran (southend) in 1797; John, son of Duncan o’Drain and Mary McConochy, born 12.2.1799; Flora Drain, widow (80), at New Orleans in 1851, with her son Duncan (43), a farmer of 15 acres, and a l2-year-old servant, Marion McCallum; Catherine Drain or Hawthorn, mother of poor relief applicant Isabella McKeich, who was born 10.12.1833 in Campbeltown; Neil Hawthorn, rope-maker, Campbeltown, son of Donald Hawthorn, sailor and Catherine McEachran, died 28.9.1856 aged 74."