There are 17 Susan Baker baptisms between 1767 and 1769, so hers is currently impossible to identify.
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Her burial abstract:

First name(s)   Susan
Last name       Morres
Denomination    Anglican
Birth year      -
Burial year     1800
Burial date     13 Feb 1800
Place           Britford
County          Wiltshire
Country         England
Notes           w Revd Robert
Record set      Wiltshire Burials Index 1538-1990
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Her memorial inscription abstract (without the inscription!):

First name(s)   SUSAN
Last name       MORRES
Birth year      1768
Death year      1800
Age             32
Burial year     1800
Burial day      7
Burial month    Feb
Place           BRITFORD
County          Wiltshire
Country         England
Notes           wife of Robert
Reference    80143
Record set    Wiltshire Memorial Inscription Index

This burial day is a few days before the burial register's day and I strongly suspect it is her day of death.
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Their marriage abstract:

First name(s)            Susan
Last name                Baker
Birth year               -
Marriage year            1792
Marriage date            01 Feb 1792
Church                   St John The Baptist
Place                    New Windsor
County                   Berkshire
Country                  England
Spouse's first name(s)   Robert
Spouse's last name       Morres
Spouse's occupation      Clerk
Licence or banns         Licence
Record set               Berkshire Marriages Index
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