She was not only guardian of the castle and island, but of her infant brother, Ferdinand, Marquis of Pescara. In his fifth year, the little fellow was betrothed to the baby Vittoria Colonna, of the same age, who was thenceforth consigned to the Duchess Costanza, to be educated with her future husband; and the little promessi sposi might be seen straying about together, hand in hand, sharing their sweetmeats and play-things, and now and then having a little fight.

"Let dogs delight," however, was so strenuously inculcated by the Duchess, that reciprocal forbearance soon cemented their affections. The Marquis was taught that he must reserve kicks and blows for his future enemies, and Vittoria that she must learn to bind up wounds rather than inflict them. And so they chased butterflies, gathered flowers, and hunted for strawberries together, themselves the prettiest blossoms that ever floated on summer air.

"Ah, lovely sight! behold them,—creatures twain,

Hand in hand wandering thro' some verdant alley,

Or sunny lawn of their serene domain,

Their wind-caught laughter echoing musically;

Or skimming, in pursuit of bird-cast shadows,

With feet immaculate the enamelled meadows.

"Tiptoe now stand they by some towering lily,

And fain would peer into its snowy cave;