entered the cardinal's service; certainly was in progress during the
early part of his engagement. This appears from a letter written to
Ippolito by his sister the Marchioness of Mantua, to whom he had sent
Ariosto at the beginning of the year 1509 to congratulate her on the
birth of a child. She gives her brother special thanks for sending his
message to her by "Messer Ludovico Ariosto," who had made her, she says,
pass two delightful days, with giving her an account of the poem he was
writing.[10] Isabella was the name of this princess; and the grateful
poet did not forget to embalm it in his verse.[11]

Ariosto's latest biographer, Panizzi, thinks he never served under any
other leader than the cardinal; but I cannot help being of opinion with a
former one, whom he quotes, that he once took arms under a captain of the
name of Pio, probably a kinsman of his friend Alberto Pio, to whom he
addresses a Latin poem. It was probably on occasion of some early disgust
with the cardinal; but I am at a loss to discover at what period of time.
Perhaps, indeed, he had the cardinal's permission, both to quit his
service, and return to it. Possibly he was not to quit it at all, except
according to events; but merely had leave given him to join a party in
arms, who were furthering Ippolito's own objects. Italy was full of
captains in arms and conflicting interests. The poet might even, at some
period of his life, have headed a troop under another cardinal, his
friend Giovanni de' Medici, afterwards Leo the Tenth. He had certainly
been with him in various parts of Italy; and might have taken part in
some of his bloodless, if not his most military, equitations.

Be this as it may, it is understood that Ariosto was present at the
repulse given to the Venetians by Ippolito, when they came up the river
Po against Ferrara towards the close of the year 1509; though he was away
from the scene of action at his subsequent capture of their flotilla, the