First of all, why “Paschal”? The word comes from Pascha which means Passover and is the proper term for the resurrection of Christ. Christ is the “Paschal Lamb” (Passover Lamb). Think of John the Baptist’s words when he first laid eyes on Christ: “Behold the Lamb of God, who takes away the sins of the world.” To a first century Jew, the term “Lamb of God” would powerfully recall Exodus, when the angel of death passed over the homes of the Children of Abraham and the Egyptians during the final plague and killed all the first born sons of the families who did not place the blood of the unblemished lamb on their door posts. “Easter” is a later import and is not a historically proper term.
In any case, read these two articles about Pascha in Dachau: