sentences:  Accordingly, Louis stirred up dissent and fomented plots in attempts to destabilise his father's reign.He quarrelled with his father's mistress, Agnès Sorel, and on one occasion drove her with a bared sword into Charles' bed, according to one source.Eventually, in 1446, after Charles' last son, also named Charles, was born, the king banished the Dauphin to the Dauphiny.