Jane and Margaret in 1881
John Mason  39
Jane Mason  40
Mgt. Holcroft  15    Relative (Other Relative)
Jane Holcroft    7    Relative (Other Relative) 
Address 2 Barlows Court, Scholes, Wigan
Piece 3762, folio 108, p29
The Masons are next door to the Holcrofts on the 1871 census
There's a marriage in 1866 of  John Mason and Jane Gaskell (father Edward, deceased soldier, ie Fanny's sister)