Hi, Edward and Martha are also my great grandparents, have discovered that they had seven children, Emma Jane born 1576, Alice born qtr 4 1877, Olive born qtr 4 1880, Hugh [my grandfather] born 13 oct 1882, Grant born qtr 2 1885, Abraham born qtr 3 1887, May 1894. But don't know of a Sarah.
Hugh married Elizabeth Hannah Basford, 4 aug 1910, in Saddleworth, 1910. and had 6 daughters one being Annie born 5 march 1912 ( my mother).
Edward was a Journeyman butcher and at some time or other had a pork butchers Shop in King Street, Delph ( a village in Saddleworth)
Edward was born qtr 1 in Saddleworth and Martha born 1852 also in Saddleworth.
just as a note Emma Jane was licensee of a Pub also in King Street possible married name of Shaw.
Hope this all helps