I think they are the Ferrel sisters of Bedlington,
would printing it in your local paper be of any use,
there is a Mary Ferrel in an ancestry tree,
but it is locked and private so I cant check if its the same one,
1881 census
Bedlington
4 Store Row
Cambois colliery
RG11/5116
David Ferrell aged 40,born Ireland,miner
Jane Fennell aged 38,born Scotland
Grace D aged 16
John aged 12
Agnes aged 9
James aged 7
Mary aged 5
David aged 3
Thomas aged 1
children born Bedlington
David dies in 1899,and left a tidy sum of money for a hard working miner with a large famly
His wife Jane dies in 1926
Ferrell Jane,widow of 19 Bondicar Terrace Blyth
died January 7th 1926
Probate Newcastle Febuary 1926
to Letitia and Jane Ferrel ,spinsters,
possibly Mary Roberts Davidsons little sisters,