His birth index:

First name(s) George R S
Last name Simey
Birth quarter 2
Birth year 1937
Mother's maiden name  Jenkins
District              Exeter
County                Devon
Country               England
Volume                5B
Page                  93
Record set            England & Wales Births 1837-2006
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In 1939  he was with his parents at 3 Marlborough Road, Exeter, Exeter C.B., Devon:

First name(s)  Last name(s)  Birth date  Sex  Occupation  Marital status  Schedule  Schedule sub number
William S   Simey     21 Sep 1897  M  Solicitor Of The Supreme Court  M  302  1
Margaret M  Simey     23 Jun 1903  F  Unpaid Domestic Duties          M  302  2
George R S  Simey     23 Apr 1937  M  Under School Age                S  302  3
Teresa E    Dalton    25 Sep 1904  F  Unpaid Domestic Duties          M  302  4
David N     Dalton    12 Dec 1928  M  At School                       S  302  5
Cecilia M   Dalton     5 Jul 1931  F  At School                       S  302  6
Violet M    Cheriton  26 Oct 1915  F  Cook General Domestic           S  302  7
Aloisia I   Karyl     13 Jun 1919  M  Cook General Domestic           S  302  8

1939 ref: RG101/6754G/002/17
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There are three marriages of George R S Simey on FIndMyPast:

Last name  First name(s)  Year    Location          Spouse
Simey      George R S     1960    Folkestone, Kent  Penelope I Pares
Simey      Georger R S    1978    Exeter, Devon     Sheila E Duller
Simey      George R S     2002    Exeter, Devon     Anne Jenkins

This raises the question of what happened to Penelope?  I can find nothing further of her after the birth of their son Piers.

His will refers to his wife Anne who must be the third of the above, but whether he married Sheila or not I am not certain.
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His death index:

Name:                      Year of Birth:  
SIMEY, GEORGE  RICHARD S   1937  
GRO Reference:  DOR  Q4/2017 in DEVON  (423-1A)  Entry Number 516438616
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His probate index:

Surname  First name      Date of probate  Probate number  Date of death     Document type   Registry
SIMEY    GEORGE RICHARD  23 April 2018    5388839         11 November 2017  Grant and will  Cardiff
           SPENSLEY

Possibly order his will?
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His will was dated 6th June 2014 and he appointed his wife Anne and daughter Tamsin as executors.  His address at death was Green Tree Court, 81 Harrington Lane, Pinhoe, Exeter, Devon EX4 8NS.

He also listed his three other children:

1. Lucy (who lived in the Netherlands and was thus opaque to british records),
2. Vicky,
3. Piers.
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Their marriage index:

First name(s)       Penelope I
Last name           Pares
Marriage quarter    4
Marriage year       1960
Marriage Finder     Penelope I Pares married one of these people
                    George R S Simey
Spouse's last name  Simey
District            Folkestone
County              Kent
Country             England
Volume              5B
Page number         1052
Record set          England & Wales Marriages 1837-2005
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