Judith, Lady Montefiore (née Barent Cohen; 20 February 1784 – 24 September 1862) was a British linguist, musician, travel writer, and philanthropist.

Marriages between Sephardim and Ashkenazim were not approved by the Portuguese Synagogue; but Moses believed that this caste prejudice was hurtful to the best interests of Judaism, and was desirous of abolishing it.

They were married on 10 June 1812, and took a house in New Court, St. Swithin's Lane, next door to one Nathan Maier Rothschild, living there for 13 years.

Her privately printed journals, threw light upon her character, and showed her to be cultured, imbued with a strong religious spirit, true to the teachings and observances of the Jewish faith, yet exhibiting the widest acceptance of those espousing other beliefs.

[5] Only a few months prior to her decease, the couple had celebrated their golden wedding anniversary, and this period was marked by what seemed a partial restoration of her health.