Hubert and Elizabeth had 2s. and 3 daus.
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His birth index:

Name:                             Mother's Maiden Surname:
ADDERLEY, HUBERT BOWYER ARDEN     STOPFORTH SACKVILLE  
GRO Reference: 1886  J Quarter in MERIDEN  Volume 06D  Page 443
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His baptism transcription by FindMyPast:

First name(s)           Herbert Bowyer Arden
Last name               Adderley
Birth year              1886
Birth date              21 Feb 1886
Baptism year            1886
Baptism date            04 Apr 1886
Denomination            Anglican
Place                   Fillongley
Father's first name(s)  Henry Arden
Father's last name      Adderley
Mother's first name(s)  Grace
Residence               Fillongley
Father's occupation     Barrister at Law
County                  Warwickshire
Country                 England
Document type           Parish registers
Archive                 Warwickshire County Record Office
Archive reference       DR0404/9
Event                   Baptisms
Page                    74
Records year range      1863-1893
Record set              Warwickshire Baptisms

There is no additional data on the register image (ie a very good transcription)

apart from:
  Celebrant:    C C Hamilton
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In the 1911 census he was ‘Retired Lieut Scots Guards’!  And was living at 36 Bloomfield Terrace, Pimlico, SW.  The actual form he completed also says he was a ‘Voluntary Worker Charity Organisation Society’.
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In 1939 the report shows his, his wife with her birth date and probably also her mother plus three closed records which may have included some children:

Lound Hall , Lothingland R.D., Suffolk, England

FIRST NAME(S)  LAST NAME(S)  DOB  SEX  OCCUPATION  MARITAL STATUS  SCHEDULE  SCHEDULE SUB NUMBER
Hubert B A Adderley   21 Feb 1886  M  Major H M Forces (Ret)     M  190  5
<Sorry, this record is officially closed. Check if you can open a closed record.>
Frederick J  Mullender  22 Jun 1910  M  Agricultural Heavy Worker  S  190  2
Rose K       Birkbeck   12 Sep 1857  F  Private - Means            W  190  3
Elizabeth    Adderley   12 Apr 1887  F  Private - Means            M  190  4
<Sorry, this record is officially closed. Check if you can open a closed record.>
<Sorry, this record is officially closed. Check if you can open a closed record.>
Elizabeth F  Knights    03 Sep 1881  F  Domestic Servant           S  190  8
Ivy E        Brown      25 Apr 1909  F  Domestic Servant           S  190  9
Adelaide     Aldred     11 Sep 1911  F  Domestic Servant           S  190  8
Jessie P     Brookes    25 Oct 1920  F  Domestic Servant           S  190  11
Phyllis M    Hovells    24 Nov 1903  F  Private Tutor              S  190  12

As his parents were still in their family home in 1939, I wonder where this home came from?  Was it his mother-in-law’s or was it rented?  I can’t see that he would have bought it from his incomes as a retired army officer.
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Their children from a search for Adderley births with a mother’s maiden name of Birkbeck

Last name  First name(s)  Year Of Birth  Location
Adderley   Rosemary E     1913           Staines, Middlesex
Adderley   John A         1916           Staines, Middlesex
Adderley   Michael C      1917           Grantham, Lincolnshire
Adderley   Mary           1922           Mutford, Suffolk

But I can’t find the fifth dau.  BP says she was Elizabeth Joan born 12 Jun 1919.  The answer was quite simple: the GRO site had the mother’s maiden name as Birkbeak and FindMyPast correctly transcribed it from the old index sheets as Birkbock!

So we have, additionally:

Adderley   Elizabeth J    1919           Mutford, Suffolk

and the individual index lines from the GRO are:

Name:                                Mother's Maiden Surname:
ADDERLEY, ROSEMARY ETHELDREDA     BIRKBECK  
GRO Reference: 1913  D Quarter in STAINES  Volume 03A  Page 7
ADDERLEY, JOHN ARDEN              BIRKBECK  
GRO Reference: 1916  M Quarter in STAINES  Volume 03A  Page 2
ADDERLEY, MICHAEL CHARLES         BIRKBECK  
GRO Reference: 1917  J Quarter in GRANTHAM  Volume 07A  Page 706
ADDERLEY, ELIZABETH JOAN          BIRKBEAK  
GRO Reference: 1919  S Quarter in MUTFORD  Volume 04A  Page 1736
ADDERLEY, MARY       
GRO Reference: 1922  D Quarter in MUTFORD  Volume 04A  Page 1746

The original paper index sheets have Birkbeck for the mother’s maiden name of Mary, so I don’t know why the new GRO index has it left out.  I have told them and hope they may re-check.
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His death index:

First name(s)  HUBERT B A
Last name      ADDERLEY
Gender         Male
Birth year     1887
Age            74
Death quarter  1
Death year     1961
District       Coventry
County         Warwickshire
Volume         9C
Page           988
Country        England
Record set     England & Wales Deaths 1837-2007
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His probate index:

sixth baron NORTON the right honourable Hubert Bowyer Arden of Fillongley Hall Coventry died 17 February 1961  Probate (save and except settled land) London 8 April to the right honourable John Arden seventh baron Norton.  Effects £35179.
Further Grant 5 June 1962
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Arms: Argent on a bend Azure three mascles of the field

Crest: On a chapeau Azure, doubled Ermine, a stork Argent.

Burke’s Peerage, 107th edn, pub 2003, Norton article, vol 2, p. 2948

Their marriage index:

First name(s)       ELIZABETH
Last name           BIRKBECK
Marriage quarter    1
Marriage year       1912
MarriageFinder      ELIZABETH BIRKBECK married one of these people
                    Thomas W Doody, Hubert B Adderley
Spouse's last name  Adderley
District            St. George Hanover Square
County              London
Country             England
Volume              1A
Page                655
Record set          England & Wales Marriages 1837-2005
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