The first definite instance of a plenary Indulgence is that of Urban II.
The greatest of all Plenary Indulgences is of course the Roman 1 Equally strong assertions were made by the provincial council of Mainz in 1261; and Lea (p. 287) quotes the complaints of 36 similar church councils before 1538.
In 1883 selected him to preside over the Third Plenary Council in Baltimore (1884), and on the 30th of June 1886 created him a cardinal priest, with the title of Santa Maria Trastevere.
Should three such interchanges be made without agreement, a common plenary sitting is held of an equal number of both delegations; and these collectively, without discussion, decide the question by common vote.
During its continuance plenary indulgence is obtainable by all the faithful, on condition of their penitently confessing their sins and visiting certain churches a stated number of times, or doing an equivalent amount of meritorious work.