Emilie Hilda Horniblow was born on 24 June 1886 in
Charlbury, Oxfordshire, the daughter of Frederick Thomas and Sarah Ellen (née McCulloch) Horniblow. She was educated at
Oxford High School and
University College, Reading. She became a teacher in
Scarborough but left teaching during the
First World War. She was then appointed as deputy to
Florence Leach, controller of the Women's Army Auxiliary Corps, which was renamed in April 1917 as
Queen Mary's Army Auxiliary Corps (QMAAC). She was promoted to chief controller and sent to France, arriving in
Le Havre on 9 July 1917. After the war Horniblow became headmistress of a women's evening institute in London and in 1935 she was appointed staff inspector for women's subjects in technical institutions. She married John Dalton (born 1885/1886) in 1941 and retired the following year. She died at her home in
Menston,
West Yorkshire, on 2 January 1950, aged 63. ==Honours==