Eliza's death notice says that she was 86 years when she died in 1927 which would mean she was born between 1840/41 Checked her death registration and it lists her parents as William and Eliza. Then searched for an Eliza Ikin born between 1840 - 1845 found only one see below.It lists mother as Eliza and father as John W. perhaps his middlename was William? not uncommon to go by middle name. At Trove newspapers there is a John William IKIN who lived at 67 Harris Street, Pyrmont died 1863 aged 50 years. Note Pyrmont where Eliza was born.Anyway would need more followup but maybe a lead.
The Sydney Morning Herald (NSW : 1842 - 1954)Thursday 10 February 1927 JANSON - February 9, at her son's residence, 10 Cook-road, Marrickville, Eliza, relict of George Janson, aged 86 years. See Friday's paper for funeral notice.
Birth Reg #: V1841255 25A/1841IKINELIZA Father: JOHN WMother: ELIZA