Ottava rima is a rhyming stanza form of Italian origin. Originally used for long poems on heroic themes, of eight 11-syllable lines, with a rhyme scheme of ABABABCC. It originated in the late 13th and early 14th centuries and was developed by Tuscan poets for religious verse and drama and in troubadour songs. Its earliest known use is in the writings of Giovanni Boccaccio.
“Ottava Rima,” Execution Ballads, accessed January 31, 2023, https://omeka.cloud.unimelb.edu.au/execution-ballads/items/show/1163.