Throughout the extensive history of the Church, there have been numerous events of lasting significance.
Each week brings anniversaries of impressive milestones, unforgettable tragedies, amazing triumphs, memorable births, notable deaths and everything in between.
Some of the events drawn from over 2,000 years of history might be familiar, while other happenings might be previously unknown to most people.
The following pages highlight events that happened this week — May 9–15 — in Christian history. They include the election of the pope who introduced the Gregorian calendar, the death of a notable Jesuit missionary to China, and a prominent Roman temple being converted into a church.