For three months Nerva ruled jointly with Trajan (Aur.
His son, BoccHus, was king of Mauretania, jointly with a younger brother Bogud.
There were some decisions that should be made jointly, and being in control meant taking full responsibility.
The landlord lets his land to two or more persons jointly, who undertake to restore it to him in good condition with one-third of it interrozzito, that is, fallow, so as to be cultivated the following year according to triennial rotation.
If a provincial synod be divided as to the guilt of a bishop, the metropolitan is to convene bishops from the neighbouring provinces to decide the cause jointly with the bishops of the original province.