It seems that William McGonagall is indeed "widely hailed as the
writer of the worst poetry in the English language," not to mention in
Scotland, as asserted by the McGonagall Online homepage cited by
scriptor. However, McGonagall does have a Scottish rival, though one
who wrote his poetry in Canada.
The pride(?) of Forres, Scotland, James McIntyre was best known as
"the cheese poet." He composed an "Ode on the Mammoth Cheese," among
other cheese poems. This ode begins with the immortal lines:
"We have seen thee, queen of cheese,
Lying quietly at your ease,
Gently fanned by evening breeze,
Thy fair form no flies dare seize."
I'll give him this much -- he clearly did know rhymes for "cheese."
Here's another sample from his oeuvre:
"The ancient poets ne'er did dream
That Canada was land of cream, ...."
It's lucky for Scotland that he emigrated, I think.
"James McIntyre - The Cheese Poet. Was he the worst poet to have
lived, evar? Or was it the noble William Topaz McGonagall, much
beloved of goons." (June 06, 2005)
"James McIntyre: The Cheese Poet"
Swift and Bored
Dictionary of Canadian Biography Online
Search strategy --
Searched on Google for combinations of the following:
moore [a bad American poet]
ros [a bad Irish poet]
"chaucer of cheese"