From an image of his baptism, a transcript by me:

“                   Page 147
“BAPTISMS solemnized In the Church of St Peter, Cranley Gardens, South kensington, in the parish of
“St Mary Abbots Kensington in the County of London in the year One Thousand eight hundred and ninety one
“. . . .
“When baptised:        March 11th 1891
“Birth date:           Feby 6th 1891
“No:                   1175
“Child’s forename:     Vivian Mortlock
“Parents’s forenames:  Alnod Ernest & Rose Beatrice
“Parents’ surname:     Studd
“Abode:                Graylands, Mellon, Suffolk
“Profession:           Army (retired)
“Celebrant:            E G A Sutton, Cuyrate
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His birth index:

First name(s)         Vivian Mortlock
Last name             Studd
Birth quarter         1
Birth year            1891
Mother's maiden name  Maclean
District              Kensington
County                London
Country               England
Volume                1A
Page                  182
Record set            England & Wales Births 1837-2006
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He appears to have married several times:

Date         Bride            Location              Groom                  Other information
———-         ————-            ————————              —————                  —————————————————

Q3 of 1914   Mabel L Hughes   Eastbourne Sussex    Vivian M Studd

Q4 of 1932   Doris Longman    Kensington, London   Vivian M Studd         She was also Reynolds

Q1 of 1945   Virginia Gordon  Westminster, London  Vivian M Studd

1951 - his death

Q3 of 1968   Vivien M Studd   Samford, Suffolk     Joseph P Ramsay

Presumably Vivien was a daughter of Vivian?

There are no marriages found in Australia in spite of the probate information.

Vivien M Studd was born in Q1 of 1946 in Deben, Suffolk.  Her mother was Smith, so was there a marriage between a female Smith and a male Studd?

There were four males who married Smiths:

Alfred C Studd in 1930 in Chelsea, London
David E Studd in 1933 in Woodbridge Suffolk
John H Studd in 19444 in Biggleswade, Beds
Keith Studd in 1947 in Staincross, Yorks

Now to find the children of Vivian:

1. Studd and Hughes children between 1912 and 1932:
   Lavender V A Studd in 1917, reg in Kensington, London
   John A P Studd in 1918, reg in Kensington, London

2. Studd and Longman or Reynolds between 1930 and 1950:
   (a) Studd and Reynolds:
       Nil
   (b) Studd and Longman
       Paul Studd in 1938, reg in Surrey North Eastern
      
3. Studd and Gordon between 1943 and 1953
       Nil

I cannot see any clear parentage line from Vivian to Vivien!
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Back to traditional genealogy, following Vivian’s known children, as above.
  
The first marriage is not the only one between Studd and Hughes, there is also an Arthur James Studd who married either Katie Sophia Hughes or Florence Jane Larkin in 1901 in Edmonton, Middlesex.  Let’s see what can be found in the 1911 census:

The 1911 census with the birth indexes establishes that that Arthur James Studd and Florence Jane Larking had a son Cecil Arthur who was born in 1903 in Romford Essex.  So Katie Sophie Hughes married someone else.  So the only births from Vivian’s marriage to Mabel L Hughes were these two:

   Lavender V A Studd in 1917, reg in Kensington, London
   John A P Studd in 1918, reg in Kensington, London


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His death index:

First name(s)  Vivian M
Last name      Studd
Gender         Female
Birth year     1892
Age            59
Death quarter  1
Death year     1951
District       Paddington
County         London
Volume         5D
Page           213
Country        England
Record set England & Wales Deaths 1837-2007
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His probate index:

`STUDD Vivian Mortlock of 1 Chepstow-mansions London W.2 died 9 January 1951 at St Mary’s Hospital London W.2  Probate London 28 May 1951 to John Marcus Garforth-Bles and Mark Horowitz solicitors.  Effects £11251 16s. 2.
Resealed Sydney New South Wales 22 January 193.

I think I have to order his will - it looks like he married three or four times and now we find he had something to do with Australia.
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Their marriage index:

First name(s)       Vivian M
Last name           Studd
Marriage quarter    3
Marriage year       1914
MarriageFinder      Vivian M Studd married one of these people
                    Mabel L Hughes
Spouse's last name  Hughes
District            Eastbourne
County              Sussex
Country             England
Volume              2B
Page number         149
Record set          England & Wales Marriages 1837-2005
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