Map of Rome
                                            Lateran I
When and where
    1123 AD (Lateran Basilica in Rome, Italy)
Crisis or controversy
    Needed to face the social and
religious problems of the day;
    First ecumenical council in the West.
Attendees
    300 bishops;
    Convened: Callistus II, Pope;
    Ratified: Callistus
Decrees and resolutions
    Promulgated canons of mixed
matters.