Eliza married in 3Q 1857 - she was born in 1839 in Gedgrave, Suffolk so was 22 at the time of the 1861 census - she was with her husband and had a daughter Emily, 2 and son John W 7months.
By 1871 Alfred, Emily and John are lodgers with William Wayman and Sarah - It says Alfred is unmarried - it could be that Eliza died betwen 1861-1871.
Laurina