Nope: the feast of Easter does not have pagan fertility origins.
The word "Easter" may be derived from Eostre, meaning in the month of April (Eoestrmonat). Whether that in turn is derived from a goddess is unclear.
I've heard that some Christians, objecting to any pagan etymologies, like to call Easter "Resurrection Sunday," --- which is just a little odd, since "Sunday" comes from the worship of the Sun, like "Monday" (Moon day), "Wednesday" (Odin's day), "Thursday" (Thor's day), "Friday" (Freya's day), or "Saturday" (Saturn's day.)
On the other hand, Easter may be a shoretened form of auferstehen --the German word for resurrection!
Do you think the Apostles hid eggs and hunted for them? The (prolific)rabbit and eggs (sign of fertility) got mingled in with traditional religious observances. The term Easter was used in the post and therefore I merely pointed out . . . and we all got sidetracked. As I pointed out I have seen "Easter" in some KJ versions but have not checked any Douay-Rheims for cross reference.