The account of the funeral sermon of Alfonso the Magnanimous delivered in Valencia cathedral on 28 July 1458 in the Dietari del capellà d’Alfons el Magnànim refers to the king’s actes and auctoritats and therefore may offer a glimpse of his status as a rex facetus very soon after the composition of Beccadelli’s De dictis et factis regis Alphonsi Aragonum in 1455.
"Autoritat: An Early Glimpse of the De dictis et factis regis Alphonsi Aragonum?,"
Translat Library: Vol. 1, No.5.
Available at: https://scholarworks.umass.edu/tl/vol1/iss1/5