The indirect right acquired by the popes as lords paramount over this vast section of Italian territory gave occasion to all the most serious disturbances of Italy between the end of the 13th and the beginning of the 16th centuries, by the introduction of the house of Anjou into Naples and the disputed succession of Angevin and Aragonese princes, Roger I.
From the outset of the reign of Charles the Bald, the integrity of Anjou was seriously menaced by a two-fold danger: from Brittany and from Normandy.
The emperors decease she wedded as her second husband Geoffrey of Anjou (1127), to whom during her fathers last years she bore two sons.
The duchy of Aquitaine required a strong ruler, and the union with Anjou was eminently desirable.
But Ladislas still occupied the papal states, and Florence, alarmed at his growing power and ambition, formed a league with Siena, Bologna and Louis of Anjou who laid claim to the Neapolitan throne, to drive Ladislas from Rome.
In 1659 he was giving directions as to the suppression of the revolt of the gentry which threatened in Normandy, Anjou and Poitou, with characteristic decision arresting those whom he suspected and arranging every detail of their trial, the immediate and arbitrary destruction of their castles and woods, and the execution of their chief, Bonnesson.
Nor must it be forgotten that this exile was due to the policy which induced the pontiffs, in their detestation of Ghibellinism, to rely successively upon the houses of Anjou and o Valois.
Thanks to Tavannes, the duke of Anjou gained easy victories at Jarnac over the prince of Cond, who was killed, and at Moncontour over Coligny, who was wounded (March October 1569); but these successes were rendered fruitless by the jealousy of Charles IX.
Grisegonelle (Greytunic) (c. 960-21st of July 987), who inaugurated a policy of expansion, having as its objects the extension of the boundaries of the ancient countship and the reconquest of those parts of it which had been annexed by the neighbouring states; for, though western Anjou had been recovered from the dukes of Brittany since the beginning of the 10th century, in the east all the district of Saumur had already by that time fallen into the hands of the counts of Blois and Tours.
England and Normandy, after some hesitation, recognized John's title; the attempt of Anjou and Brittany to assert the rights of Arthur ended disastrously by the capture of the young prince at Mirebeau in Poitou (1202).