Edward Williams
Iolo Morganwg wrote poems in both the English and Welsh languages. He wrote in the voice of other poets, as well as his own. Some of the forged poems were said to be written by the fourteenth century poet Dafydd ap Gwilym. Iolo Morganwg was known for his works as a literary forger.  After his death, he had a reputation as one of Europe's most successful forgers