The DT set (disregarding the rather strange typos) is the text published in A Selection of Collected Folk-Songs (Novello, 1912), as "collected and arranged by R Vaughan Williams". The text was from a Mr Stacey of Hollycombe, Sussex: a cowman, aged about 80 in 1904. It appears that RVW polished it up a bit, and may have given it a tune from another source. Roy Palmer (Folk Songs Collected by Ralph Vaughan Williams, no. 98) prints tune (quite different from that in SCFS, which is a puzzle) and text as originally noted by RVW.