Where does the expression "If wishes were horses. beggars would ride" derive from?

From If wishes were horses, beggars would ride - Wikipedia, the free encyclopedia --

The first recognisable ancestor of the rhyme was recorded in William Camden's (1551-1623) Remaines of a Greater Worke, Concerning Britaine, printed in 1605, which contained the lines: "If wishes were thrushes beggers would eat birds". The reference to horses was first in James Carmichael's Proverbs in Scots printed in 1628, which included the lines: "And if wishes were horses, pure [poor] men wald ride". The first mention of beggars is in John Ray's Collection of English Proverbs in 1670, in the form "If wishes would bide, beggers would ride". The first versions with close to the modern wording was in James Kelly's Scottish Proverbs, Collected and Arranged in 1721, with the wording "If wishes were horses, beggars would ride". The modern rhyme above was probably the combination of two of many versions and was collected by James Orchard Halliwell in the 1840s.