William Morris - A Good Knight In Prison

Wearily, drearily,
Half the day long,
Flap the great banners
High over the stone;
Strangely and eerily
Sounds the wind's song,
Bending the banner-poles.

While, all alone,
Watching the loophole's spark,
Lie I, with life all dark,
Feet tether'd, hands fetter'd
Fast to the stone,
The grim walls, square-letter'd
With prison'd men's groan.

Still strain the banner-poles
Through the wind's song,
Westward the banner rolls
Over my wrong.

William Morris

http://www.poemhunter.com/poem/a-good-knight-in-prison/