Songfacts®:

• "The Ash Grove" is the English version of "Llywyn Onn," a famous Welsh harp melody. As with most ancient folk songs, there are no definitive lyrics, but what might be called the standard version is similar in content to the English folk song "The Unquiet Grave," though without the supernatural content.
• "The Ash Grove" was published in Volume I of the 1862 collection Welsh Melodies, With Welsh And English Poetry, by John Jones, Esq. (Talhaiarn), and Thomas Oliphant, Esq...Complete in Two Volumes, By Addison, Hollier and Lucas of London., according to which: 'This Melody was introduced into The Beggar's Opera in 1728 to the words "Cease your funning."'
  
  There are many other published arrangements including one for women's voices by C. Hahn c1925; an arrangement for men's voices by Thomas Dunhill published in 1926, and an earlier 1835 arrangement for piano (with variations) by Henry Brinley Richards. >>>

  Suggestion credit:
  Alexander Baron - London, England, for above 2