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Kitty da Costa

1710 – 1747

Breach of promise defendant

Defendant
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About Kitty da Costa

Lived 1710 – 1747 (aged 36–37). Kitty da Costa was a British defendant.

Kitty da Costa (born Catherine Rachel da Costa; 1710–1747), also known by the names Kitty Villareal and Kitty Mellish after her marriages, was an English Sephardi Jew who converted to Christianity. She was sued by her suitor and first cousin Philip Jacob Mendes da Costa for breach of contract, in a court case which caused controversy at the time. She had four children, three of whom survived into adulthood.

Early life Catherine (Kitty) Rachel da Costa was born in London in 1710 to Joseph da Costa and Leonora Sara Mendes. In 1690, there were approximately 800 Sephardis in England and by 1720 there were 1,000; most had moved in order to avoid the Spanish Inquisition. Kitty da Costa lived on Budge Row in the City of London and at the family's country retreat, the Manor of Copped Hall in Totteridge, Hertfordshire. The Budge Row house belonged to her grandfather until his death in 1716, whereupon it was inherited by her father.

Kitty da Costa Villareal spent winters at Budge Row, living there with her eight servants. She also had a house of her own at College Hill in London. Her confidante Anna Webb claimed that on 18 January 1731 (just three weeks after the death of her husband), Kitty da Costa Villareal had invited her former suitor Philip Jacob Mendes da Costa for breakfast, telling him they should be married after the mourning period and giving him a kiss. Kitty and Philip exchanged passionate letters and attempted to elope, but her father would not permit the marriage. Angered, Philip da Costa decided to sue Kitty da Costa for breach of promise at the Arches Court in 1732 (De Costa v. Villareal), arguing that a contract had been broken and he was entitled to damages of £100,000 . The case caused a scandal at the time. Evidence was not heard in court but affidavits were supplied. On 25 June 1733, Doctor Bettesworth handed down the judgement that Philip was not entitled to damages since even if Kitty had wanted to marry, her father's agreement had not been given. Philip da Costa then published his score-settling account of what had happened under the pseudonym Philalethes as The proceedings at large in the Arches Court of Canterbury, between Mr. Jacob Mendes Da Costa, and Mrs. Catherine Da Costa Villa Real: Both of the Jewish religion and cousin Germans, relating to a marriage contract. It helped her case that she was now Christian and followed the religion of the land. Hardwicke, now Lord Chancellor, commented that he gave judgement with reluctance but there was no reason to keep the children away from their mother. Elizabeth later married William Monckton-Arundell, who became 2nd Viscount Galway, making her Lady Galway; she was the first peer to have been born Jewish.

The Mellishes lived in Nottinghamshire. William Mellish used his wife's money to become a Member of Parliament for East Retford in 1741. Kitty Mellish died on 19 March 1747 in Blyth, Nottinghamshire. She left her entire estate to her husband.

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Important facts

Born
1710, London
Birth century
Died
1747
Occupation
Defendant
Also known as
Catherine Rachel Mellish, Catherine da Costa, Catherine Villareal, Kitty Mellish, Kitty da Costa Villareal, Catherine Mellish
moreCatherine Da Costa Villa Real, Catherine Rachel da Costa

People in Kitty da Costa's life

Named in this biography and alive at the same time

Contemporaries

People whose lives overlapped Kitty da Costa's

Frequently asked questions

Who was Kitty da Costa?

breach of promise defendant

When was Kitty da Costa born?

Kitty da Costa was born in 1710 in London.

When did Kitty da Costa die?

Kitty da Costa died in 1747.

What was Kitty da Costa's occupation?

Kitty da Costa was a defendant.

What nationality was Kitty da Costa?

Kitty da Costa was British.

Sources & further reading

· Wikipedia: Kitty da Costa

· Wikidata: Q18954093

· DBpedia: Kitty da Costa

Cite this page

APA: Biography.guide. (2026). Kitty da Costa. https://biography.guide/kitty-da-costa/

MLA: "Kitty da Costa." Biography.guide, https://biography.guide/kitty-da-costa/.

Chicago: "Kitty da Costa." Biography.guide. https://biography.guide/kitty-da-costa/.

Data last updated: 2026-09-20 · Spot an error? Report a correction.

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