Only a short time after the alleged host desecration in Krakow am See in 1325 by Jews, a similar case occurred once again in Guestrow in 1330, both of which were to serve as templates for the considerably later host desecration trial against the Jews of Sternberg in 1492.
The legend has been handed down as follows: Near Guestrow there once lived a converted Jewess. When she declined an invitation from her unconverted sister-in-law, allegedly for religious reasons, a quarrel arose between them. The sister-in-law reproached her, saying that her earlier motives had not been the best in any case: After she had been expelled from the synagogue for her godlessness, she had only accepted Christian baptism in order to live even more wantonly.
The convert was in turn outraged and threatened to make public an incident she knew of, at which she had been present. A Christian woman of Guestrow had, namely, previously sold a consecrated host to the Jews. They had then pierced the hosts in their synagogue, whereupon blood appeared on them in several places. The converted Jewess had also heard the voice of a child during the mistreatment of the host, which had impressed her and immediately moved her to Christian baptism, in order to obtain the forgiveness of her sins.
The incident soon came to light, possibly through the converted Jewess herself after all. All Jews of the town were arrested and interrogated under torture on princely orders regarding the accusations. A confession could not, however, be obtained from them in this way. In contrast to the Jews, however, the Christian woman who had allegedly sold the host confessed immediately upon her arrest and was promptly consigned to the flames.
An attempt was now made to persuade the most respected Jew of the town, named Eleasar, to accept baptism for himself and his family, in order to permanently put a stop to such blasphemies by the Jews. The endeavor was in vain, for both he and his wife refused, maintaining their innocence. All the Jews, apparently 23 in number, were now threatened with the stake, but again without success, for all the Jews insisted on their innocence and were thereupon all -- with the exception of Eleasar and his wife -- burned.
Duke Johann II, Lord of Werle-Guestrow and known as "the Bald", who ruled over Guestrow, was a man of action. He and his wife Mechthild tried once more in vain to convert Eleasar and his wife. Eleasar was ultimately forced to watch the burning of his own wife and then likewise went to the stake.
Prince Johann now harbored serious doubts about the accusations, given the steadfastness of the Jews. He threatened the accusers in turn with death, should they fail to produce the said hosts as evidence. And behold: the search of Eleasar's house then inevitably brought the desecrated host to light. The popular fury of Guestrow boiled over and destroyed the local synagogue.
Two years later, a Holy Blood Chapel was erected at the site of the destroyed synagogue from the property of the executed, in which the host was preserved and venerated. The chapel was not, however, granted long fortune: In the Great Town Fire of 1503, it too fell victim to the flames. The host, however, could be saved and was venerated in the cathedral until the Reformation. On the site of the chapel, a Franciscan monastery was established in 1510.