Perseus, sei, and Perses, sis, or si, A noble knight, whiche veliuered a fayre Lady (called Andromeda) from a whale, and also slue Medusa, whiche turned men into stones. Of his fa-ther and mother looke Danaë, Also it is a signe among the starres.
Lewis and Short: Latin dictionary
persĕa, ae, f., = perse/a, a sacred tree in Egypt and Persia, Plin. 13, 9, 15, 63; 15, 13, 13, 45.