Llandaff is subdivided into over 120 parishes, and these are grouped together on a formal or informal basis The Diocese of Llandaff takes its name from the ancient that was established on the site of a church built by the Celtic saints in the 6th century A Diocese (the name given to the geographical area under the authority of a diocesan bishop) is a complex organisation, and Llandaff is no exception Until 1920 the Anglican Welsh Church was part of the Church of England, but since that date we have been independent and autonomous, drawing up our own procedures, rules and regulations, while observing what is happening in our sister Churches of the elsewhere in the UK and around the world