As has already been mentioned, this is Professor Child's number #173 (English and Scottish Popular Ballads, 1884-98). At this point, I'd best just indicate some of what's already available online at some of the more reliable sites:
In the Digital Tradition:
THE FOUR MARIES Text and tune from the Grieg-Duncan Collection; no original source is named, but Bruce Olson has mentioned elsewhere that this one came from Susan and Mary Strachan in 1916.
MARY MILD Another text and tune from the Grieg-Duncan Collection; no original source named.
MARY HAMILTON (2) From a record by Jean Redpath; no tune given or previous source named. The text appears to be a cut-down version of Child's #173:I, which was taken from Scott's Minstrelsy of the Scottish Borders, and was itself a collation of several texts. Jean doesn't name her source for either text or tune in the notes to her recording.
MARY HAMILTON Text and tune from the Joan Baez Songbook, with no indication given as to source.
In the Forum:
lyrics req: Four Mary's Contains an unformatted text taken from a 1960s book with no original source named; it's actually Child's version A, which was largely taken from C.K. Sharpe's Ballad Book (1824),
There is an entry at The Traditional Ballad Index:
At Lesley Nelson's Folk Music site:
The Four Marys Text and tune from Jerry Silberman's Songs of the British Isles; no original source source named.
There are two American variants with soundfiles, both of which use the best-known tune, at The Max Hunter Folk Song Collection:
Mary Hamilton As sung by Jane Robinson, Fayetteville, Arkansas on June 21, 1958
Four Mary's As sung by Almeda Riddle, Heber Springs, Arkansas on October 23, 1965 ^^