Madoc is a long poem by Robert Southey. The author is famous as the third of the Lake Poets. "Madoc" is an epic poem. It was first published in 1805. The poet worked on the poem for ten years. It tells about legendary Welsh prince Madog, ab Owain Gwynedd. He lived in 12th century. According to the legend, he explored America long before Christopher Columbus. The poem is divided into two parts. The first is named "Madoc in Wales" while the second "Madoc in Aztlan". The poem is written in Blank verse that is in unrhymed iambic pentameter.