Editing Benvenuto Cellini (section)

===Ferrara and France===
The plots of [[Pier Luigi Farnese]] led to Cellini's retreat from Rome to [[Florence]] and [[Venice]], where he was restored with greater honour than before. At the age of 37, upon returning from a visit to the French court, he was imprisoned on a charge (apparently false) of having embezzled the gems of the pope's [[Papal tiara|tiara]] during the war. He was confined to the [[Castel Sant'Angelo]], escaped, was recaptured, and was treated with great severity; he was in daily expectation of death on the [[scaffold]]. While imprisoned in 1539, Cellini was the target of an assassination attempt of murder by ingestion of [[diamond]] dust; the attempt failed, for a nondiamond gem was used instead.<ref>{{cite book |author=Robert A. Freitas Jr. |title=Nanomedicine |url=http://www.nanomedicine.com/NMIIA/15.1.1.htm |volume=IIA: Biocompatibility |publisher=[[Landes Bioscience]] |location=Georgetown, TX |year=2003 |chapter=15.1.1 Mechanical Damage from Ingested Diamond}}</ref> The intercession of Pier Luigi's wife, and especially that of the Cardinal d'Este of [[Ferrara]], eventually secured Cellini's release, in gratitude for which he gave d'Este a splendid cup.{{sfn|Rossetti|Jones|1911|p=605}}<ref>Cellini, ''Vita'', Book 2, Ch II</ref>

Cellini then worked at the court of [[Francis I of France|Francis I]] at [[Fontainebleau]] and Paris. Cellini is known to have taken some of his female models as mistresses, having an illegitimate daughter in 1544 with one of them while living in France, whom he named Costanza.<ref>Cellini, ''Vita'', Book 2, Ch XXXVII</ref> Cellini considered the [[Anne de Pisseleu d'Heilly|Duchesse d'Étampes]] to be set against him and refused to conciliate with the king's favorites. He could no longer silence his enemies by the sword, as he had silenced those in Rome.{{sfn|Rossetti|Jones|1911|p=605}}