1433, Ángel Rodríguez González & José Armas Castro (eds.), Minutario notarial de Pontevedra (1433-1435). Santiago de Compostela: Consello da Cultura Galega, page 53:
con estes aparellos seguintes, conven a saber: tres ancoras et hũu arpeo de ferro con seus eixos et hũa gindaresa de fio de canavo
with the following gear, that is: three anchors and one grappling hook of iron, with their windlasses, and a hawser made of hemp
Xavier Varela Barreiro, Xavier Gómez Guinovart (2006–2018) “arpeo”, in Corpus Xelmírez - Corpus lingüístico da Galicia medieval (in Galician), Santiago de Compostela:ILG