Hello again Alison!!
Annis and Elsie Illingworth died and were cremated in Sydney.Their sister Merle lived in the Blue Mountains and died there. The twins (Annis/Elsie) lived on the Nth Shore. Elaine (Elsie's daughter) is still alive and lives in Qld. She married in England.
I still can't find Cole Ellis (Elsi'e husband and father to Elaine)I have been contacted for information on John Kellaway's sister who was a missionary. Do you know anything about her?
I have also been contacted by Bob Griffiths who has an enormous amount of information on the Illingworth families. His post is on this website.
I hope that all is well with you.