No birth found in English records.

But if this is her death record, it also gives her birth date though she would have been 43 at her last parturition, not impossible of course:

First name(s) INGEBORG
Last name LANE
Gender Female
Birth day 13
Birth month 11
Birth year 1923
Age -
Death quarter 3
Death year 2003
District YORK
District number 6611D
Register number D15B
Entry number 063
Date of registration mm/yy 0703
County Yorkshire
Country England
Record set England & Wales deaths 1837-2007

I’ll order her death certificate in the hope that it mentions her husband’s name.

In the light of the electoral rolls below, I don’t think this is her death.
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There are three electoral roll addresses for her of which the first two look like her:

First name(s) Ingeborg M
Last name Lane
Age guide
Address 1, Willow Close, Brighton, East Sussex, BN2 6SX
Town Brighton
District Brighton
County East Sussex
Country England
Year 2002
Electoral rolls 2002
Occupancy (years) 2
Other occupants Anthony Lane
Record set UK electoral registers 2002-2014

First name(s) Ingeborg M
Last name Lane
Age guide 65+
Address 8, Pilgrims Lane, London, London, NW3 1SL
Town London
District Hampstead
County London
Country England
Year 2002-09
Electoral rolls 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
Occupancy (years) 23
Other occupants David Cox, John Pickering, Julian Carrera
Record set UK electoral registers 2002-2014

First name(s) Ingeborg
Last name Lane
Age guide 65+
Address 12, Broom Road, Tadcaster, North Yorkshire, LS24 9LH
Town Tadcaster
District Tadcaster
County North Yorkshire
Country England
Year 2002-03
Electoral rolls 2002, 2003
Occupancy (years) 3
Other occupants Frank Lane, Michael Lane
Record set UK electoral registers 2002-2014
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The next probate entry is more likely to be hers:

Surname First name Date of probate Probate number  Date of death  Document type  Registry
LANE   INGEBORG MARIE 15 January 2010 3191213 18 February 2009  Grant and will  Winchester

So I’ve ordered this as well.

The will reveals that she was the second of the above Electoral Roll entries and had been living at 8 Pilgrims Lane London.  Her will shows that she had two daughters Ellen Karne Hagen and Anne Lisle Martinsen.  She is most unlikely to have been A P Lane’s wife.
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Their marriage:

First name(s) ANTHONY P
Last name LANE
Marriage quarter     2
Marriage year        1956
MarriageFinder       ANTHONY P LANE married
                     INGEBORG M ZENSKE
Spouse's last name   ZENSKE
District             WESTMINSTER
County               London
Country              England
Volume               5C
Page                 733
Record set           England & Wales marriages 1837-2008
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