Early in February, 1798, Casanova was taken sick with a very grave bladder trouble of which he died after suffering for three-and-a-half months. On the 16th February Zaguri wrote: “I note with the greatest sorrow the blow which has afflicted you.” On the 31st March, after having consulted with a Prussian doctor, Zaguri sent a box of medicines and he wrote frequently until the end.

On the 20th April Elisa von der Recke, whom Casanova had met, some years before, at the chateau of the Prince de Ligne at Teplitz, having returned to Teplitz, wrote: “Your letter, my friend, has deeply affected me. Although myself ill, the first fair day which permits me to go out will find me at your side.” On the 27th, Elisa, still bedridden, wrote that the Count de Montboisier and his wife were looking forward to visiting Casanova. On the 6th May she wrote, regretting that she was unable to send some crawfish soup, but that the rivers were too high for the peasants to secure the crawfish. “The Montboisier family, Milady Clark, my children and myself have all made vows for your recovery.” On the 8th, she sent bouillon and madeira.

On the 4th June, 1798, Casanova died. His nephew, Carlo Angiolini was
with him at the time. He was buried in the churchyard of Santa Barbara at
Dux. The exact location of his grave is uncertain, but a tablet, placed
against the outside wall of the church reads:
JAKOB
CASANOVA
Venedig 1725 Dux 1798