(γ) a bastard Madonna Camilla Lucrezia; (evidently the offspring of an intrigue carried on when Duke Cesare was in Ferrara in 1500–1 arranging the marriage of Madonna Lucrezia Borgia to the heir of Duke Ercole d’Este;) born of Duke Cesare and a married woman in Ferrara; according to the deed of legitimation,[88] dated 1509, where Madonna Camilla Lucrezia is said to be “of the age of more than seven years”: she became Abbess of San Bernardino in Ferrara, in 1545; and died in 1573. The Duchess Lucrezia Borgia d’Este was deeply grieved by the death of Duke Cesare her half-brother. There is a very touching letter written by her friend and sister-in-law, the Marchioness Isabella Gonzaga of Mantua, to Duke Alfonso who at that time was in Rome. It is dated the eighteenth of April 1507; and describes how that the Duchess of Ferrara, on receiving the sad news, immediately went to the church of the monastery of Corpus Domini and remained during two days and nights, praying for the repose of the soul of Duke Cesare de Valentinois. A simple act; and precisely what any good Christian woman would do in similar circumstances. * * * * * A year later, on the fourth of April 1508, at the Castle of Ferrara to the immense joy of all, _formosus puer est formoso natus Aprili_, says Benedetto Lampridii in his Carmina Inedita, the Duchess Lucrezia bore to Duke Alfonso a son and heir, who was baptized by the name Ercole.