El Cantar de mio Cid, or El Poema de mio Cid, also known in English as The Poem of the Cid, is the oldest preserved Castilian epic poem. Wikipedia
Original language: Old Spanish
Date: Composed sometime between 1140 and 1207
Also known as: Poema de mio Cid (Poem of my Cid)
Genre: Cantar de gesta
Length: 3730 verses
Manuscript(s): Unique manuscript. National Library of Spain, Vitr.7–17.
Verse form: Anisosyllabic with assonant rhyme