Was thought to be a twin of Mary who died as baby. However, was recorded 4m old, living a 304 Beckwith St., Birkenhead in 1881, so not a twin.
Had died by 1891 census
Name: Elizabeth Mather Estimated birth year: abt 1881 Year of Registration: 1886 Quarter of Registration: Jan-Feb-Mar Age at Death: 5 District: Birkenhead (1861-1998) County: Cheshire, Merseyside Volume: 8a Page: 337
Burial record number 3101 Buried 6 Jan 1886, aged 5 Living at 300 Beckwith Street., Birkenhead Buried in a Public grave, section NC 6, grave 551
Joseph and Ellen Mather and Family were living at 304 Beckwith St, Birkenhead at 1881 Census. On Elizabeth Mathers burial record of 6-Jan-1886, the address is recorded as 300 Beckwith Street, but this could be an error.