There is some further information which RAh32 and Vectis have come up with - some answers, some more questions about Eileen/Nellie HARRIS/HARRISS/HARRILL's earlier life.
The records for her from the time she left for Australia in April 1920, having married John Ingleby LEE in Warminster UK on 22 December 1919, (transcription in NAA WW1 records for John LEE) all use the name Nellie LEE or
Nellie Eileen LEE and paint a good picture of her life through 3 sons, death notices and electoral rolls etc. These details also correspond with family knowledge of her here in Oz.
The family has another marriage certificate:
442654 . August 7th 1918 St Barnabas Church parish of Little Ilford.
Marriage between
William Stanley Gray 28 Bachelor Lieutenant HM Forces c/o The Orwell Hotel Felixstowe, father Alexander Gray (deceased)
Eileen May Harriss aged 23, Spinster, 24 Byron Ave Little Ilford, father; William Henry Harriss (deceased)
Witnesses: Henrietta Alice HARRILL and Albert (illegible - could be ALLEN)
Henrietta HARRILL was her mother. She seems to have used the names Nellie/Eileen/Aileen and surnames HARRIS and HARRILL and now HARRISS at verying times in her earlier life.
Family lore has it that there had been an earlier marriage and a child born who died at age 3.
The only FreeBMD birth and death which seem to fit are these:
Birth: Dorothy E R Gray December quarter,1920 Camberwell - indexes have mother as Harriss
Death: Dorothy Gray 1923 Lambeth
However there is a GRAY/HARRISS marriage in Camberwell in1914 which may be the parents of Dorothy E GRAY, given that Nellie had a boy registered in South Australia (as found on rootschat) in the same quarter as the registration of the Dorothy GRAY birth in England. So it looks as though Dorothy E R GRAY is not Nellie's child.
Possibly Eileen had a child with Lt GRAY before she married John LEE and which she left behind when she came to Oz .
And what happened to Lt William Stanley GRAY? I started a thread on the Armed Forces board but had no joy.
http://www.rootschat.com/forum/index.php?topic=690743.0Judith