Okay kiddo, so you know how some people choose to dedicate their lives to serving God and helping others around them? Well, those people are called monks or priests. And some monks or priests choose to live together in a special group called a religious order.
Canons Regular of the Holy Sepulchre is one of those religious orders. They are a group of Catholic priests and brothers who live together and follow a set of rules that were created a long time ago. Their special job is to take care of the holy places in the city of Jerusalem, where Jesus lived and died.
The Holy Sepulchre is a really important place in Jerusalem, it's where Jesus was buried and rose from the dead. Canons Regular of the Holy Sepulchre have been taking care of this place for hundreds of years! They also teach people about Jesus and help those who are in need.
So, in short, Canons Regular of the Holy Sepulchre is a group of Catholic priests and brothers who live together and take care of the holy places in Jerusalem. They are dedicated to serving God, teaching about Jesus, and helping others.