where does the word come from why is this hoilday named easter??

Ancient Saxons celebrated the return to spring with a huge festival. The name, Easter, is a derivative of the name of a goddess of fertility. Early Christians intertwined their own celebration of the Resurrection of Christ with the earlier pagan festivities in order to garner acceptance and conversion to Christianity. It was very convenient and probably saved a bunch of lives, (as well as souls), by not presenting Christianity in a totally adversarial manner. The two celebrations were, after all, signifying a rebirth and return to life. The emperor, Constantine, had a hand in establishing the date for the ancient celebration in a non-ambiguous way. The Easter Rule stated that, “Easter shall be celebrated on the first Sunday that occurs after the first full moon on or after the vernal equinox, or the first day of spring.” Easter is therefore celebrated on a Sunday between the dates of March 22nd and April 25th.