Her birth:

Surname First name(s) District Vol Page
Births Sep 1907
MARTIN Marion Gertrude Paddington 1a 31

Her v. probable marriage, due the Pershore location:

Surname First name(s) Spouse District Vol Page
Marriages Jun 1936   (>99%)
Bennett Nellie I Godfrey Pershore 6c 608   
Godfrey Sidney V Bennett Pershore 6c 608   
MARTIN Marian G Todd Pershore 6c 608   
Todd    Aubrey M Martin Pershore 6c 608
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I wonder if these were their children:

Surname First name(s) Mother District Vol Page
Births Sep 1936   (>99%)
TODD Constance M Martin Worksop 7b 66   
Births Mar 1939   (>99%)
Todd John Martin Ipswich 4a 1587

And I wonder what this marriage is:

Surname First name(s) Spouse District Vol Page
Marriages Jun 1947   (>99%)
Eltham Derek C Rossiter Edmonton 5e  1103
Litterick James G Mortin   Edmonton 5e  1103
Martin Marian G Litterick Edmonton 5e  1103
Rossiter Doris M Eltham Edmonton 5e  1103

The answer is that her first husband died in 1946 and she remarried in 1947.

Being 40, could she have had any more children?  Let’s see: the answer is that no registrations were made of Litterick children with a mother’s maiden name of Martin.

Then two further marriages appear betwee FreeBMD and FindMyPast:

Surname First name(s) Spouse District Vol Page
Marriages Mar 1965   (>99%)
MARTIN Marian G Spratling Wandsworth 5d 1466
SPRATLING Reginald MARTIN Wandsworth 5d 1466

and

In Q3 of 1969 Marian G Martin married Anthony P Byrnes in Basford dist, Notts Vol 3C, p. 345.
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In 1939 she and Aubrey were found in the Register but with no sign of any children:

62 Hill Avenue , Worcester C.B., Worcestershire, England

FIRST NAME(S) LAST NAME(S) DOB SEX OCCUPATION MARITAL STATUS  SCHEDULE  SCHEDULE SUB NUMBER

Aubrey M Todd 19 Jun 1881 Male Fruit & Vegetabel Grower  Married  63  1
Marian G Todd 06 Aug 1907 Female Assisting Above  Married  63  2
Violet M Amphlett 09 Mar 1908 Female Domestic Duties  Single  63  3

Ref: RG101/5761C/006/3 Letter Code:
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Her death index cannot be found under Martin, Spratling or Byrnes but can be found under Todd and with the same birth date as in the 1939 register:

First name(s) MARIAN GERTRUDE
Last name TODD
Gender Female
Birth day 6
Birth month 8
Birth year 1907
Death quarter 4
Death year 1989
District Evesham
Register number 1289
County Worcestershire
Volume 29
Page 347
Country England
Record set England & Wales Deaths 1837-2007
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Her probate index:

TODD, Marian Gertrude of 81 Newtown Rd, Malvern Worcs died 23 December 1989  Probate Birmingham 3 July £499258  9051208646T
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Their marriage:

Surname First name(s) Spouse District Vol Page
Marriages Jun 1936   (>99%)
Bennett Nellie I Godfrey Pershore 6c 608   
Godfrey Sidney V Bennett Pershore 6c 608   
MARTIN Marian G Todd Pershore 6c 608   
Todd Aubrey M Martin Pershore 6c 608