Casgliadau Arlein

Ym 1835 ysgogwyd William Weston Young gan Raeadr Gwladys neu Raeadr y Ferch ar Afon Myrddin i ysgrifennu cerdd sy'n dechrau fel hyn: 'Sweet scene of features soft and mild; Mix'd with objects grand and wild; Rocks of soft through darken'd hue, Foliage rich and varied too; Waters falling from high, After gently gliding by, O'er smooth rocks of polish'd face, Where each joint and line we trace.'