(Presumably sister) Sarah accompanied Albert to N Surrey District school in 1900 and again in 1901. Mother recorded as Harriet, a widow, There is a death of an Albert James Wood in Wandsworth in 1898. Haven't yet tied Harriet definitively to Albert S senior but both 1881 and 1891 have likely candidates. Could be Harriet Clapp, married Q2 1880 to Albert james Wood St Saviours.
MaxD