An accused slave could not invoke the aid of the tribunes.
His incompetent leadership made it necessary for the rebels to invoke the help of France.
He is the patron of Brie, and gardeners invoke him as their protector.
The mere credens could at best invoke the living saint, and ask him to pray for him.
The kingdom was harassed almost incessantly, and more than once partitioned,by pretenders to the throne, who did not scruple to invoke the interference of the neighbouring monarchs, and even of the heathen Wends, who established themselves for a time on the southern islands.