Gk. pascha, from Heb. pesah). The Passover (which see), and so translated in every passage except in the KJV: "intending after Easter to bring him forth to the people" . In the earlier English versions Easter had been frequently used as the translation of pascha. At the last revision Passover was substituted in all passages but this. The word Easter is of Saxon origin, Eastra, the goddess of spring, in whose honor sacrifices were offered about Passover time each year. By the eighth century Anglo-Saxons had adopted the name to designate the celebration of Christ's resurrection. bibliography: N. M. Denis-Boulet, Christian Calendar (1960). (from New Unger's Bible Dictionary)
The name "Easter" originated with the names of an ancient Goddess and God. The Venerable Bede, (672-735 AD.) a Christian scholar, first asserted in his book De Ratione Temporum that Easter was named after Eostre (a .k.a. Eastre). She was the Great Mother Goddess of the Saxon people in Northern Europe. Similar "Teutonic dawn goddess of fertility [were] known variously as Ostare, Ostara, Ostern, Eostra, Eostre, Eostur, Eastra, Eastur, Austron and Ausos." Her name was derived from the ancient word for spring: "eastre."