James Byrne and his mother Margaret

[Abhanliath]

I think Martha was probably her proper name. The place it appears is in a correction by the registrar on her death registration (attached).

[shanreagh]

it is that red pointed piece that I would like to see written out...especially on whose behalf or on whose authority it was made.  Mrs B Morgan acted as 'trustee' (particularly for sums of money due) to Mrs Byrne for 20 or so years and it was on her authority that the Mrs Byrne was buried and the death registered. The name of the person who made the affidavit referred to does not seem to be Mrs Morgan. Mrs Morgan's name was Brigid I think. 

It may be a case that her name was Margaret but she was aka (also known as) Martha and may have been known as Martha by the person who signed the statutory declaration.

I pored through the military file and could find nowhere any indication of the age of James Byrne or even a birthdate though Mrs Byrne's own birthdate is given in 1855.   It is the death certificate that has an age of 17 years.   

[Abhanliath]

That's right, and death certs can be uninformed at times. But it has the correct address for where they were living.
Transcription of the registrar's declaration on the death registration: "In No 3554(3) for Margaret Byrne read Martha Byrne corrected by me on 8.12.36 in regard as of registrar on production of statutory declaration made by Elizabeth Moulds first sent at death, MOS"
If you look across to the listing it reads:
355, 1936 29th November, 36 Clarendon Street, Margaret Byrne, Female, widow, 81 years, nil (under "Occupation"), acute cardiac failure 7 days senility certified, B Morgan (who took charge of the body) 57 South Richmond Street under "informant"), First December 1936 (under "when registered", M O'Sullivan (under "signature of registrar").

[shanreagh]

The big question is though who is Elizabeth Moulds who is able to give a declaration that another person's name is different from that she was married under and different from that she received a pension from her son's death under. 

Do you know of the names of any other siblings of James?  Who is the family you are tracking?

The James who died in 1916 is clearly given the age of 17 years. So he may have been born around 1898-1899 to a mother named Margaret who may also be known as Martha if the pension record is correct.   

[Abhanliath]

I know very little. I have the military pension files, Margaret and Patrick's probable marriage registration and James's possible (but 10 years earlier) birth registration, and a probable sighting of Margaret, James and a younger brother Patrick in the 1911 census. And James's death registration in 1916 giving his age as 17, and Margaret's death registration in 1936 in her 80s.

As I read the registrar's statement, Elizabeth Moulds was a neighbour of Bridget Morgan's and went down to register Margaret's death; later, the registrar corrected the forename from Margaret to Martha. My guess - and it's only a guess - about this is that the registrar had records available to him that caused him to correct Margaret to Martha.

I don't know what St Michael's, Eglinton Road, was - that was Margaret's residence at the time of her marriage - but wonder if it might have been an orphanage or convent. But I can't find any such place in Thom's or the censuses.