sentences:  One consequence of the Protestant Reformation and subsequent ethnic and religious discord in Britain and Ireland was the promotion of the idea of a 'Celtic' church that was different from and at odds with the 'Roman' church, and that held to certain offensive customs, especially in the dating of Easter, the tonsure, and the liturgy.Scholars have noted the partisan motives and inaccuracy of the characterisation, as has "The Catholic Encyclopedia", which also explains that the Britons using the 'Celtic Rite' in the early Middle Ages were in communion with Rome.The early Middle Ages saw the creation and adoption of the modern Welsh name for themselves, "Cymry", a word descended from Common Brittonic "combrogi", meaning "fellow-countrymen".