Can't help with the lyrics requested, but I have a book which was given to me by my Grandmother, called 'The Drovers Highway', by Roy Saunders, and although it is a novel depicting the life of the drovers on such a drive from mid-Wales to Smithfield market in London in the 1840's, and describes the various perils they encountered on the way. It was published by the Oldbourne Book Co.Ltd. 121 Fleet St. London E.C.4. in 1959.
It was given to me in 1962 as a Xmas present; and my Gran, as a child, could remember the drovers passing through her locality and calling at her farm to take their cattle and sheep to the London markets where the prices were highest. The book actually mentions the name of my Grandmother's farm -'Cilane', and so has a very special significance for me!
P