He married Alicia Magdalena Wilson.
Their son, Francis Lestock Beaufort (1815–1879) later went out to India and served in the Bengal civil service, from 1837 to 1876.
He was for many years judge of the twenty-four Purgunnahs, Calcutta.
He was the author of the well-known Digest of the Criminal Law Procedure in Bengal (1850), and died in 1879.
Beaufort's youngest daughter Emily Anne Smythe was a hero of Bulgaria, a writer, illustrator and advocate of change in the training of nurses.

Alice Beaufort died on August 27, 1834.
Francis Beaufort married again in 1838, to Honora Edgeworth, the daughter of his brother-in-law Richard Lovell Edgeworth and his second wife. (
Francis' sister Frances Beaufort had married Edgeworth as his fourth wife years earlier in the 1810s.)

Beaufort's extant correspondence of 200+ letters and journals contained portions written in personal cipher.
Beaufort altered the Vigenère cipher, by reversing the cipher alphabet, and the resulting variant is called the Beaufort cipher.
The deciphered writings have revealed family and personal problems, including some of a sexual nature.
It appears that between 1835 and his marriage to Honora Edgeworth in November 1838, he had incestuous relations with his sister Harriet.
His diary entries, in cypher, show that he was tortured by guilt over this.

He died on 17 December 1857, at age 83 in Hove, Sussex, England.
He is buried in the church gardens of St John at Hackney, London, where his tomb may still be seen.
 His home in London, No.
51 Manchester Street, Westminster, is marked by an historic blue plaque noting his residency and achievements.
He married Alicia Magdalena Wilson. Their son, Francis Lestock Beaufort (1815–1879) later went out to India and served in the Bengal civil service, from 1837 to 1876. He was for many years judge of the twenty-four Purgunnahs, Calcutta. He was the author of the well-known Digest of the Criminal Law Procedure in Bengal (1850), and died in 1879. Beaufort's youngest daughter Emily Anne Smythe was a hero of Bulgaria, a writer, illustrator and advocate of change in the training of nurses.
Alice Beaufort died on August 27, 1834. Francis Beaufort married again in 1838, to Honora Edgeworth, the daughter of his brother-in-law Richard Lovell Edgeworth and his second wife. (Francis' sister Frances Beaufort had married Edgeworth as his fourth wife years earlier in the 1810s.)
Beaufort's extant correspondence of 200+ letters and journals contained portions written in personal cipher. Beaufort altered the Vigenère cipher, by reversing the cipher alphabet, and the resulting variant is called the Beaufort cipher. The deciphered writings have revealed family and personal problems, including some of a sexual nature. It appears that between 1835 and his marriage to Honora Edgeworth in November 1838, he had incestuous relations with his sister Harriet. His diary entries, in cypher, show that he was tortured by guilt over this.
He died on 17 December 1857, at age 83 in Hove, Sussex, England. He is buried in the church gardens of St John at Hackney, London, where his tomb may still be seen.  His home in London, No. 51 Manchester Street, Westminster, is marked by an historic blue plaque noting his residency and achievements.
Francis Beaufort