For ease of searching Links
MILLER family
1901 Census Record1911 Census RecordNoting that Edward is described as born in Dublin City
but the other children were born in Co. Dublin
could imply that the family moved after the birth of Bridget in 1907
O’MALLEY family
1901 Census Record1911 Census ReturnInvesting a birth certificate will give Elizabeth’s surname and help the search
However this is a good possibility,
it is a Civil Record Reference of an 1898 marriage
between Patrick O’MALLY and Elizabeth HUGHES in Rathdown district
and could be a good place to start.
Also this is a
Civil Record Reference for Marriage of
Denis MILLAR to Mary Anne Doyle note on another site states the record relates to another site
Marriage certificates will give father’s name and help place their ancestry
Possible birth and death for Mary Anne/Anna Mary MILLER hereThe birth and death certificates for the family members will show where they were living and create a timeline if you have not already obtained them
editted to add
if you use
www.familysearch.org and search for deaths in Rathdown
There are only a few matches for a Patrick O'Malley and Elizabeth O'Malley in the 1930s and 1940s
with a reasonable match of a birth date
if you search for deaths in Dublin South
There are only two matches for Denis Millar/Miller
with a reasonable match of a birth date
investing in these certs could also prove fruitful especially if you could establish where they are buried and find further records there