man Frederick Charty Rivers "Unknown Langton" Langton of Farnham Royal, Surrey, UK of Hendon, Middlesex, London‏‎ #8235‎, son of Gent William Langton of of Cippenham, Berkshire and Elizabeth Rivers‏.
Born ‎1811, died ‎1876–1881‎, 69 or 70 years, buried ‎ Hendon, London, UK

Married ‎5 Oct 1855 Sandbach, UK (25 or 26 years married) to:

woman Sarah Peevor‏‎ #8236‎, daughter of Unknown Peevor and N.N.‏.
Born ‎1836, died ‎1916‎, 79 or 80 years

Children:

1.
woman Margaret Ruth Langton‏‎ #8278‎

not mentioned in census, but listed (erroneously) by Charles Langton in the Langtons of Langton as being the daughter of a different brother, along with the other children.
So we think she exists. Probably not in census because she died.
2.
man Rev. Frederick William Langton of Wolvercott, Oxfordshire, UK‏‎ #8269
Born ‎1857, died ‎after 30 Mar 1895 http://www.stsepulchres.org.uk/burials/mallam_thomas.html
attended funeral of THOMAS MALLAM
‎, at least 38 years
M.A. Merton col, Oxford.

Not mentioned in census, but listed (erroneously) by Charles Langton in the Langtons of Langton as being the son of a different brother, along with the other children.
Likely not in census because we older and had gone to college, or moved out.

One of the subscribers of the book The Langtons of Langton, by Charles Langton. Perhaps a descendant now owns a copy?

Title Form of Service for Induction of Rev. F.W.Langton to Wolvercote
Date 05/Sep/1889
Repository Oxfordshire Record Office
Level Individual document
Reference PAR295/9/A3/1

The living is a vicarage, gross yearly value £190, with residence, in the gift of the Warden and Fellows of Merton College, Oxford, and held since 1889 by the Rev. Frederick William Langton M.A. of Merton College, Oxford. There is a small Baptist chapel here, built in 1881. In this parish is a paper mill belonging to the University of Oxford, driven both by steam and water-power, and employing about 100 hands. The Duke of Marlborough, who is lord of the manor, Mr. H. O. King, St. John’s, Worcester and Merton Colleges, Oxford, and the University of Oxford, are the principal landowners.

1892 story in paper:
http://www.oxfordmail.co.uk/news/community/memorylane/10330930.Parishioners_in_Wolvercote_are_solid_as_a_rock/

Guardian, 16 October 1895:
Tho Rev. F. W. Langton, vicar of Wolvercote, has been appointed vicar of Pontolund [Northumberland], in succession to tho Bishop of Zanzibar. Mr. Langton also succeeded Bishop Richardson at Wolvercote in 1889.

29 Sep 1893
Attended wedding of Mary Peevor, his cousin
3.
man Henry Earnest Langton of Hendon, Middlesex, London‏‎ #5235‎
Born ‎1860 Rastick, Yorkshire, UK
1881 census.
4.
man River Haydon Langton of Hendon, Middlesex, London‏‎ #5236‎
Born ‎1862 Rastick, Yorkshire, UK
1881 census.

1896:
Class (5. Six single trusses of any one variety. Amateurs. First, L 1 , to Rivers H. Langton, Esq., Raymead, Hendon
https://archive.org/details/journalofroyalho20roya
5.
woman Mary Gertrude Langton‏‎ #8279‎
Born ‎1865
not mentioned in census, but listed (erroneously) by Charles Langton in the Langtons of Langton as being the daughter of a different brother, along with the other children.
So we think she exists. Probably not in census because she died.
6.
woman Sarah Langton of Hendon, Middlesex, London‏‎ #5237‎
Born ‎1866 Rastick, Yorkshire, UK
1881 census.
7.
woman Jessie Blanch "Jessie Blanche Langton, Jessie B Langton" Langton of Hendon, Middlesex, London‏‎ #5238‎
Born ‎1869 Rastick, Halifax, Yorkshire, UK, died ‎1952 Hendon, London, UK‎, 82 or 83 years
1881 census.

J. B. Langton:
; Festival of Empire, Imperial Exhibition and Pageant of London, Crystal Palace, 1911, silver award medals (2), by Pinches, Britannia standing facing, holding trident and laurel, naked man with torch at left, draped woman with wheatsheaf at right, revs. border of wild roses, named (J.B. Langton, Bowl of Roses; J.B. Langton, Vase of Roses), both 63mm (MJP p.43; Allen 10, large size [as Allen 20 obv.]; BHM 4087 rev.) [5]. Very fine and better, the 1911 medals rare (£90-120)

Sold as part of a lot for £210 30th June 2004:
Finchley Horticultural Society, 1892, an engraved silver medal for Most Creditable Exhibit, named (A.T. Langton, Esq), 33mm; National Rose Society, silver award medals (2), by Pinches, one gilt, shield on wreath, revs. named (Harrow 1903, B.H. Langton, Best Rose Amateurs, ‘Mdme. Cusin’; Harrow 1905, B.H. Langton, Best Rose in Show, ‘Horace Vernet’), both 41mm (MJP p.176); Festival of Empire, Imperial Exhibition and Pageant of London, Crystal Palace, 1911, silver award medals (2), by Pinches, Britannia standing facing, holding trident and laurel, naked man with torch at left, draped woman with wheatsheaf at right, revs. border of wild roses, named (J.B. Langton, Bowl of Roses; J.B. Langton, Vase of Roses), both 63mm (MJP p.43; Allen 10, large size [as Allen 20 obv.]; BHM 4087 rev.) [5]. Very fine and better, the 1911 medals rare (£90-120)
8.
woman Beatrice Haydon "Beatrice H Langton" Langton of Hendon, Middlesex, London‏‎ #5239‎
Born ‎1873 Rastick, Yorkshire, UK, died ‎1936 Canterbury, Kent, UK‎, 62 or 63 years
1881 census.

-- MERGED NOTE ------------

Beatrice Hendon Langton
1901. Metropolitan Class, 2nd place. And Decorative Class, 3rd place: https://archive.org/stream/gardenerschronic330londage/18/mode/2up/search/langton - there are several other sources of her winning prizes for flowers.

National Rose Society, silver award medals (2), by Pinches, one gilt, shield on wreath, revs. named (Harrow 1903, B.H. Langton, Best Rose Amateurs, ‘Mdme. Cusin’; Harrow 1905, B.H. Langton, Best Rose in Show, ‘Horace Vernet’), both 41mm (MJP p.176) (Both sold as part of a lot (see below) for £210 30th June 2004. Later each listed on ebay for £15 in 2018.)

Could be her cousin Alfred or Arthur?
A.T. Langton, Esq:
Finchley Horticultural Society, 1892, an engraved silver medal for Most Creditable Exhibit, named (A.T. Langton, Esq), 33mm
Sold as part of a lot (see below) for £210 30th June 2004. Later listed on ebay for £10 in 2018.
9.
woman Ethel Langton of Hendon, Middlesex, London‏‎ #5240‎
Born ‎1876 Rastick, Yorkshire, UK
1881 census.