Could it be William Morris? Possibly from The Earthly Paradise?

William Morris's Arthurian approach to Arthuriuan legend is very different from Tennysons. I prefer it - partly maybe because of the great story of William Morris sitting weaving some fabric and roaring out some Arthurian poem he was making up. And stopping and saying something like -"Well, if this is poetry, it's not so hard." (And maybe I'm influenced by politics as well.)

Here's a link to some of Morris's poems anyway.