Carlo Acutis, a London-born boy, is set to become the first millennial saint on Sunday. Known for his early use of technology to spread Catholic teachings, he created websites documenting miracles. His canonization, initially planned for April, was postponed due to Pope Francis' death. Millions have visited his preserved body in Assisi, while his London baptism church has seen increased visitors. Two miracles attributed to him, including a cancer remission, led to his sainthood. Acutis, who died of leukemia at 15, is seen as relatable by young Catholics due to his shared interests, like video games.

Prepared by Emily Rhodes and reviewed by editorial team.