There are two marriage entries on record, both in India:

First:

First name(s)          Nicholas John Hamilton
Last name              Minshall
Marriage year          1939
Marriage date          1939
Spouse's first name    Eillish Lyn
Spouse's last name     Crosbie
Place                  Fort William
Presidency             Bengal
Groom's age            31
Bride's age            22
Catalogue description  Parish register transcripts from the Presidency of Bengal, : 1713-1948
Archive reference      N-1-600&601
Folio number           32
Entry number           -
Record set             British India Office Marriages

Second:

First name(s)         Nicholas N H
Last name             Minshall
Sex                   Male
Marriage year         1940
MarriageFinder:       Nicholas N H Minshall married one of these people
                      Eillish L Crosbie
Marriage place        Calcutta
Place type            Place
Country               India
Type                  Armed Forces
Source                Gro Index Army Marriages (1881 To 1955)
Records year range    1940
Archive reference     ARM2
Page                  185
Line number           78
Archive               General Register Office
Record set            British Armed Forces And Overseas Banns And Marriages

The people are the same, the year appears different.  But it has to be the one marriage.

The image of the second entry, an index only, adds nothing.
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