His christening from FamilySearch:

John James Johnson
England Births and Christenings
Name: John James Johnson
Gender: Male
Christening Date: 01 Jul 1812
Christening Place: ALL SAINTS,CHICHESTER,SUSSEX,ENGLAND
Father's Name: William Johnson
Mother's Name: Mary
Indexing Project (Batch) Number: C04088-1 , System Origin: England-ODM , GS Film number: 504430


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In the 1861 census,

First name(s) Last name Relationship Marital status Gender Age Birth year Occupation Birth place
John J Johnson Head Widower Male 48 1813 Barister Of Law In Actual Practice  Chichester, Sussex
Edward P C Johnson Son - Male 7 1854 Scholar London, Middlesex,
Eleanor M Johnson Daughter - Female 6 1855 Scholar  London, Middlesex
Marianne Hill Servant Unmarried Female 35 1826 Governess In The Family  Kidderminster, Worcestershire
William Thompson Servant Unmarried Male 35 1826 House Servant  Alresford, Hampshire
Caroline Pung Servant Unmarried Female 21 1840 House Servant  Stepney, Middlesex

Census details
First name(s) John J
Last name Johnson
Relationship Head
Marital status Widower
Gender Male
Age 48
Birth year 1813
Occupation Barister Of Law In Actual Practice
Birth town Chichester
Birth town as transcribed CHICHESTER
Birth county Sussex
Birth county as transcribed SUSSEX
Birth place (other) England
Birth place other as transcribed -
House name West Broyle House
Street West Lavant
Parish East Lavant
City or borough -
County Sussex
Country England
Municipal ward -
Parliamentary borough -
Hamlet East Lavant
Ecclesiastical district Chichester
Registration district Westhampnett
Enumeration district 5
Piece number 620
Folio number 63
Page number 16
Family member last name PUNG, THOMPSON, HILL, JOHNSON
Family member first name(s) CAROLINE, WILLIAM, MARIANNE, ELEANOR, EDWARD, JOHN
Record set 1861 England, Wales & Scotland Census
Category Census, land & surveys
Subcategory Census
Collections from Great Britain
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In 1881, still alive but a widower and retired.

In 1881 he had an Emily I Johnson staying with him, a few years older than his daughter Eleanor; my guess is that she was a relation.

On FreeBMND there are loads of JJJ deaths.  But only these look possible, for after 1881:

Q3 of 1890, aged 78, St Geo Han Sq, vol 1a, p. 299, - age spot on,
Q3 of 1895, aged 87, Edmonton, vol 3a, p. 202   - too old by 4 yrs.

I’ll go for the first.
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For his marriage, the best info on FreeBMD is:

John James Johnson and Mary Judith Barson m in Q3 of 1852 in Havant district of Hants, vol 2b, p. 557.

But this needs a census or two to confirm it.  Unfortunagtely she died before the 1861 census.  Nor can she be found in the 1851 or 1841 censuses.
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Clif Jade has kindly passed on to me this extract from “Men at the Bar” by Joseph Foster, now found to be on p. 245 of the second edition of 1885:

  Johnson, John James, Q.C., recorder of Chichester since 1863, J.P. Sussex, vice-chairman quarter sessions Western division, educated at Winchester Coll., a student of the Middle Temple 19 April, 1833, called to the bar 10 June, 1836, Q.C. 15 Feb., 1864, bencher 5 May, 1864, treasurer 1877 (3rd son of William Johnson, Esq., of Chichester, Sussex, dec.); born   June, 1812; married 8 July, 1852, Mary Judith, 2nd dau. of Thomas Barton, Esq., of Rolands Castle, Hants; she died  , 1855, leaving issue.

  West Broyle, Chichester, Sussex; 26 Chesham Place, Belgra ve Sq S.W.; 10 King’s Bench Walk, Temple, E.C.; Union Club.
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Their marriage registration:

Surname First name(s) District Vol Page
Marriages Sep 1852   (>99%)
Barson Mary Judith Havant 2b 557   Scan available - click to view
JOHNSON John James Havant 2b 557

But Men at the Bar reports that her surname was Barton.
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