Her baptism in the Isle of Man:

Name:           Norah Powys
Baptism Date:   28 Oct 1872
Baptism Place:  Michael, Isle of Man
Residence:      Bishop's Court
Father:         Henry Lyttleton Powys
Biography:      
Parents:        Henry Lyttleton Powys (capt 52nd) & Helen Cecilia Powys
URL:            http://www.imuseum.im/search/people/

The actual record was:

Date:               October 28th 1872
Name:               Norah, daughter of
Parents Forenames:  Henry Lyttleton & Helena Cecilia
Parents’ Surname:   Powys
Abode:              Bishops’ Court
Profession:         Captn 52nd L.I.
Celebrant:          Horace Sodor & Man

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No marriage and no death record on FreeBMD up to c. 1940.
BUT ... see below.
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In the 1911 census she was at Parknasilla Compton Road New Milton So Hampshir:

                 Condition/
Name Relation Yrs married Sex  Age  Birth Year  Occupation  Where Born

POWYS, Norah                 Head  S  F  38  1873  Visiting Governess in Private Families
                                                                      Cork Ireland [sic ]
COLLIER,  Frederic James     Vstr  M  M  29  1882  Gardener Domestic  Ringwood Hants
COLLIER,  Elizabeth Mary     Vstr  M  F  29  1882  Housekeeper        Highgate London
COLLIER,  Marjorie Kathleen  Vstr  -  F   3  1908                     New Milton Hants

1911 ref: RG14PN5804 RG78PN265 RD94 SD2 ED6 SN215
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TFPL, Oct 2011: Just found an entry for her birth in the index of Overseas BMDs:

Regimental Birth  POWYS NORAH 52nd Isle Of Man    1872 RbO-R.pdf p.189 Vol:1234 Page:28

Note that this is in contrast to the Cork, Ireland birth place she gave in the 1911 census.  She probably had no birth certificate and maybe gave the earliest place she remembered as that of her birth.  But her baptism has been discovered to have been by her grandfather the bishop in his Chapel on the Isle of Man.

An alternative entry is on a record titled “ARMY BIRTHS AND BAPTISMS”

Name           Place           Year    Regt     Vol   Page
====           =====           ====    ====     ===   ====
Powys. Norah   Isle of Man     1872    52nd     1234   28

I suppose the question is whether this is for a birth or a baptism record.  It is odd that  both her and her brother, whose entry is for Malta, are listed together on this page and with the same volume number.  But this is not worth the £11 to find the answer as both dsp.
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Might she have migrated to Ireland and died there?

If she was single in 1911 and 38, I think it unlikely she would have married and had children.  But nothing found in the Irish records, or even FindMyPast’s ‘World’ records.
Trying Ancestry.

And Ancestry produced the goods, an ‘INFORMAL REPORT OF DEATH OF A BRITISH SUBJECT’.  This was handled by the American Foreign Service as France had been conquered by Germany, Britain was also fighting Germany and the Americans had not then declared war against the Germans.  The record is:

Made at:  Nice, France, A.M. June 10, 1941

Name:         Miss Norah POWYS
Age:          70
Nationality:  British subject by birth
Death date:   May 10 9 am 1941
Death place:  Sassy Peak Hospital, Sessee (A.M.) France
Cause of death:  Vulvular disease of the heart.  Attending physician:
                 Dr E.F. Gisser Sassy Bank Hospital, at Cannes (AM)
                 France
Disposition of the bidy:  Interred Cannes Cimetery, Cannes (A.M.) France

Local law as to disinterring remains: By federal decree of March 12, 1923
                 remains of persons dying from certain contagious disease
                 cannot be disinterred until after three years, all other
                 remains at any time, except during the summer months,
                 provided authorisation be obtained.

                 In custody of the American Consulate, in charge of British
                 interests, Nice, France (A.M.)

Pewrson responsible for effects: Mr Horace Remillard

Accompanying relative or friend: Mrs Rame, of Pense (A.M.) France, a friend.

Address of relative: Lord Lilford, Lilford Hall, Ammdel, Northampton, second cousin.

Notification sent to: Lord Lilford by cable on May 19 1941 by:
            Matron, Cunny Bank Hospital, Cannes

Information held in file No 704.63 in this office

Death reported by Boblet & Co, Cannes, undertakers.

Signed:  Horace Remillard, Consul of the USA
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The above death report seems to confirm that she dien unmarried and with no children.
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Her probate index:

1942
POWYS Norah of Pension Joie de Vivre Vence Alpes Maritimes France spinster died 18 May 1941 at Sunny Bank Nursing Home Cannes France  Probate Winchester 18 April to Lloyds Bank Limited. Effects £3765 16s. 4d.

Will ordered to see who she left it to.
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Note that the probate entry includes ‘Spinster’ to indicate she never married.
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The probate addes to the above that there were both a will and a codicil.
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Her will was dated 16th January 1939 and her codicil was on 16th January 1939 and she listed these relatives and others:

1. Marion Emily Hughes widow of Colonel Reginald George Hughes of Barn House Watlington Oxfordshire
2. Rev Edrward B. A. Somerset of Grinton Vicarage, Richmond, Yorks.
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