Under the regency of his old master, Demetrius Phalereus, Dinarchus exercised much political influence.
He created a regency in Lisbon, and departed for Brazil on the 29th of November 1807, accompanied by the queen Donna Maria I., the royal family, all the great officers of state, a large part of the nobility and numerous retainers.
Ferdinand, Philip's son, who succeeded under Dutillot's regency in 1765, saw his states occupied by the revolutionary forces of France in 1796, and had to purchase his lifeinterest with 6,000,000 lire and 25 of the best paintings in Parma.
After the death of Margaret, Charles appointed his sister Mary, the widowed queen of Hungary, to the regency, and for twenty years she retained her post, until the abdication Mary of in fact of Charles V.
On the death of Roger in 1119, the principality came under the regency of Baldwin II.