 It was the same ambiguity of expression which misled Colman in 664 and St. Aldhelm in 704.The first and second orders used the Celtic tonsure, and it seems that the Roman coronal tonsure came partly into use during the period of the third order.After that we have an obscure period, during which the Roman Easter which had been accepted in South Ireland in 626-28, became universal, being accepted by North Ireland in 692, and it seems probable that a Mass on the model of the Carlsruhe and Piacenza fragments and the Stowe and Bobbio Missals - a Roman Canon with some features of a non-Roman type - came into general use.