The highest grade, "pater", is by far the most common one found on dedications and inscriptions – and it would appear not to have been unusual for a mithraeum to have several men with this grade. The form "pater patrum" (father of fathers) is often found, which appears to indicate the "pater" with primary status. There are several examples of persons, commonly those of higher social status, joining a mithraeum with the status "pater" – especially in Rome during the 'pagan revival' of the 4th century. It has been suggested that some mithraea may have awarded honorary "pater" status to sympathetic dignitaries.