You know my predilection for etymology. What does the word “Easter” mean? Our indefatigable friends at Wikipedia provide us with the following information:
The modern English term Easter developed from Old English word Ēastre or Ēostre or Eoaster, which itself developed prior to 899. The name refers to Eostur-monath, a month of the Germanic calendar attested by Bede as named after the goddess Ēostre of Anglo-Saxon paganism. Bede notes that Eostur-monath was the equivalent to the month of April, and that feasts held her in honor during Ēostur-monath had died out by the time of his writing, replaced with the Christian custom of Easter.
Now we know.