Civil Registration Indexes (Births)
Probably:

Mary Catherine Holman, reg. 2nd quarter of 1887, Auckland, Durham, England.
Muriel Christine Holman, reg. 3rd quarter of 1888, Barton Regis, Gloucestershire, England.
Muriel Christine Holman, reg. 3rd quarter of 1888, Barton Regis, Gloucestershire, England.
Mary Charlotte Holman, reg. 3rd quarter of 1891, Plymouth, Devon, England.
Maud Constance Holman, reg. 2nd quarter of 1893, Bridgend, Glamorgan, Wales.
Mary Casteen Holman, reg. 3rd quarter of 1895, Droitwich, Worcestershire, England.