Hi Colleen,
A change from Irene to Aileen isn't too big a jump. Can't believe some of the different names people have used in my tree!!
Re the MILLYNN's - if Eileen is the right family - found her
1913 Reg 5517 MILLYNN Eileen M father Alfred mother Margery S at Inverell
other Siblings up to 1917-
1915 reg 21094 Christina M parents as above at Cobar
1917 reg 25681 Alfred W parents as above at Goulburn.
There is a marriage in 1912 /6101 Alfred MILLYNN and Margery S GLYNN or CLYNN at Inverell. So perhaps Iris was born after 1917?
Sorry I couldn't help more,
Shaz
