In the late eighteenth century, Xavier Lampillas asserted that fourteenth-century Italian poets were influenced by the Spanish Arabic poetic style through the Provençal poets. Lampillas was not the first person to make this assertion, but his argument came at a time when the relative merit of Italian and Spanish was widely debated. Although his ideas were eventually discarded due to a lack of evidence, scholars are now revisiting this theory and are slowly beginning to substantiate it.
Gibson, M. Carl
"Background to the Theory of Arabic Origins,"
BYU Studies Quarterly: Vol. 4
, Article 4.
Available at: http://scholarsarchive.byu.edu/byusq/vol4/iss3/4