In fact, the history of Halloween comes from All Saints Day (which was once called "All Hallows Day"). The word Halloween means "All Hallows Eve"...the day before All Saints Day! I love to try and picture the enormously joyful party up in Heaven on this day as the lives of ALL of the Saints in Heaven are celebrated!
We celebrated All Saints Day at our Catholic parish on base too! All of the CCD children dressed up as Saints and gave a short presentation on the life of their Saint.
Peter was Saint Ignatius of Antioch. Saint Ignatius was the third Bishop of Antioch (which is right down the road from us)! He was the first Church Father to refer to the Church as "Catholic". Saint Ignatius was captured for his faith and martyred in Rome.
Since I am a CCD teacher, I also got to dress up! I was Saint Helen. Saint Helen was the mother of the Roman Emperor Constantine. She used her wealth to help the poor and build churches in the Holy Land. She is famous for finding the True Cross of Christ.
My teaching buddy, Katrina, dressed as Saint Gabriel the Archangel. Her husband and son joined her as Saints Raphael and Michael the Archangels!