I only have 2 Cresswells in my tree so far, but not blood relatives, my grandmother Maud's first wedding was to a John Cresswell in Aston in 1907, but I am descended from her second partnership (no marriage found yet!). Her wedding certificate states an Alfred Cresswell as John's father. Alfred's profession was Curator of Observatory, and John lived at 30 Leamington Road, Gravelly Hill. I haven't found much on censuses.
Do you have any more details? Age, grandfather's name etc.
I found just 1 Ada on the 1891 census:-
CRESSWELL  James  Head  M  M  34  Chill Fitter (Bedsteads)(Em'ee  Glamorgan - Woolstone   ÂÂ
  CRESSWELL  Sarah A  Wife  M  F  31    CHA - Crewe   ÂÂ
  CRESSWELL  Sarah A  Dau  -  F  4  Scholar  Warwickshire - Birmingham   ÂÂ
  CRESSWELL  Alice E  Dau  -  F  3  Scholar  Warwickshire - Birmingham   ÂÂ
  CRESSWELL  Ada F  Dau  -  F  1    Warwickshire - Birmingham   ÂÂ
  ROGERS  Sarah  Ma-Law  W  F  60    Warwickshire - Birmingham