 Ordained a diocesan priest on 7 October 1827, Guéranger was quickly named a canon, a member of the cathedral chapter of Tours.During this period, he was appointed to serve as the administrator of the parish of the Foreign Missions until near the close of 1830.At this point he demonstrated his interest in the liturgy when he began to use the Roman Missal and texts for the Divine Office, unlike most of his colleagues, who still made use of the Gallican texts commonly in use in pre-Revolutionary France.