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In page Midsummer:

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Midsummer festivals are celebrated throughout Scotland, notably in the Scottish Borders where Peebles holds its Beltane Week. The Eve of St. John has special magical significance and was used by Sir Walter Scott as the title, and theme, for a pseudo-ballad poem. He invented a legend in which the lady of Smailholm Tower, near Kelso, keeps vigil by the midnight fires three nights in a row (see above) and is visited by her lover; but when her husband returns from battle, she learns he slew that lover on the first night, and she has been entertained by a very physical ghost.[citation needed]