New coat of arms (used at the time he was Archbishop of  Zaragoza, Valencia and Lieutenant General of Aragon) of Alonso (or Alfonso) of Aragon
Menéndez Pidal de Navascués, Faustino (2011). Heráldica de la Casa Real de León y Castilla. Madrid: Eds. Hidalguía. ISBN 978-84-939313-0-8. P.385
Lesser variant with the ornaments,Alonso of Aragon. Repertorium Fororum et Observantiarum Regni Aragonum (1554), page 2. Alonso didn't use the eclesiastic hat in his heraldry
Heralder