"The Ash Grove", in Welsh "Llwynn-onn", also known as "The Ashtree Grove", "Llewellyn" or "Sir Watkin William Wynn" is a Welsh (originally), Scottish and New England air, waltz or hymn in 3/4 time and C Major (Laufman), F Major (Jones) or G Major (Bingley, Johnson). The parts are played AB (Kerr), AAB (Bingley, Johnson, Jones, Laufman). "The Ash Grove" is a traditional Welsh folk song whose melody has been set to numerous sets of lyrics. The best-known version was written in English by Thomas Oliphant in the 19th century. The air is considered by some to be an early 18th century melody from Wales, perhaps because it is attributed to that country in the Gows' Fourth Collection of Strathspey Reels (c. 1800), where it appears as "Sir Watkin Williams-Wynn", the name of several generations of Welsh baronets. The Gows' title refers to either Sir Watkin Williams-Wynn (1749-1789) or his son Sir Watkin Williams-Wynn (1772-1840), 5th Baronet. The earliest Welsh printing was in Edward Jones' Bardic Museum (1802) as "Llwynn-onn", where it is given that it was named after 'Mr. Jones's mansion near Wrexham' in Denbighshire. The Jones family had occupied the estate since the 15th century. In the 20th century the melody was used for several "hymns". It was printed in Bingley's North Wales...delineated from two excursions, vol. 2 (1804), Johnson's The Kitchen Musician's Occasional: Waltz, Air and Misc., No. 1 (1991), Jones' The Bardic Museum (1810 edition), Kerr's Merry Melodies, vol. 3, Laufman's Okay, Let's Try a Contra, Men on the Right, Ladies on the Left, Up and Down the Hall (1973) and Matthiesen's Waltz Book I (1992). It was recorded by Robin Huw Bowen on Telyn Berseiniol Fy Ngwlad/The Sweet Harp of My Land (1996) and Green Mountain Volunteers on New England Country Dance Music.