As the two children, Andreas and Joanna, grew up to maturity, it became more and more apparent that there was no bond of sympathy between them. Andreas had as his preceptor a monk named Fra Roberto, who was the open enemy of Philippa, and her competitor in power. It was his constant aim to keep Andreas in ignorance and to inspire him with a dislike for the people of Naples, whom he was destined to govern, and to this end he made him retain his Hungarian dress and customs. Petrarch, who made a second visit to Naples as envoy from the pope, has this to say of Fra Roberto: "May Heaven rid the soil of Italy of such a pest! A horrible animal with bald head and bare feet, short in stature, swollen in person, with worn-out rags torn studiously to show his naked skin, who not only despises the supplications of the citizens, but, from the vantage ground of his feigned sanctity, treats with scorn the embassy of the pope." King Robert saw too late the mistake he had committed, as the sorrow and trouble in store for the young wife were only too apparent. To remedy, so far as was in his power, this unhappy condition of affairs, he called again a meeting of his feudal lords; and this time he had them swear allegiance to Joanna alone in her own right, formally excluding the Hungarians from any share in the sovereign power. While gratifying to the Neapolitans, this act could but excite the enmity of the Hungarian faction under Fra Roberto, and it paved the way for much intrigue and much treachery in the future.