In September 1516, Judeo-conversa Isabel López, along with her mother María, was arrested by the Inquisition in Cogolludo, Spain, observing the Sabbath by dressing in holiday garb and joining others to celebrate. Her trial is the subject of an article by Renée Levine Melammed for the Jerusalem Post Magazine.
Further charges included praying on Shabbat and observing dietary laws. Isabel denied the charges, but was tortured and sentenced, again, along with her mother, to the auto-da-fé. Melammed is a professor of Jewish history and dean at the Schechter Institute.