"O mother, mother, make my bed, O make it soft and narrow"
The flower known as 'Bonnie Barbara Allen'
GNU Free Documentation LicenseThe flower known as 'Bonnie Barbara Allen' - Credit: KENPEI, Wikimedia Commons

These lines come from a folk song known as 'The Ballad of Barbara Allen'.

It tells of a young man who is dying of his unrequited love for a young woman called Barbara Allen. When called to his deathbed, Barbara Allen is dismissive of him, but following his death she is filled with remorse, and dies herself shortly afterwards.

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Listen on Spotify to 'Barbara Allen' sung by Shirley Collins