The naming of Avisa is very subtle. In the epistle to the reader the author introduces us to four chaste women Lucreece Penelope Susanah and Avisa , the author remarks that something is wrong with one of these women then conjoins two phrases to show that Avisa is a composite name being made by the conjoining of Lucres-Avis and Avi -Susan. This is the device that shows us how the name Avisa has been formed and we can see that 3 of the 4 birds have been accounted for in this device namely Avis Susan, Lucres-Avis and Avisa. The bird NOT seen in this device is Penelope . What this is telling us is that the author is singling out Penelope as being an unchaste woman. A' visa is latin for not seen Avis Latin for bird - The name Avisa is a constant reminder of the bird / woman not seen in the device who we know is Penelope. It is Penelope who this libel is really about. Avisa is referred to as a hawk or an Eagle these are both predatory birds not normally associated with chastity .