Civil Registration Indexes (Births)
Probably:

Ethel Maud Trimmer, reg. 1st quarter of 1898, Alton, Hampshire, England.
Ethel Amelia Trimmer, reg. 1st quarter of 1902, Stockbridge, Hampshire, England.
Ethel Irene Trimmer, reg. 4th quarter of 1904, Alton, Hampshire, England.

Births and Baptisms
Probably:

Ethel May Trimmer, bapt. 22 April 1894, Froyle, Hampshire, parents: Thomas Henry and Emma.
Ethel Maud Trimmer, bapt. 24 April 1998, Alton, Hampshire, parents: Jaohn and Jane.
Ethel Amelia Trimmer, born 03 February 1902, bapt. 04 April 1902, Salisbury, Wiltshire, parents: John and Ida Emily
Ethel Irene Trimmer, born 25 July 1904, bapt. 28 August 1904, East Tisted, Hampshire,
      parents: Ralph Egbert and Lavinia Eugene.