Marriage certificate:
Marguerite M Cheverton m. Leslie F. L. Patch or Leslie F. Lloyd-Patch (both varients are given on the index), 1919 September quarter, Bradfield district, volume 2c page 1082. They cut it close: Elizabeth M. Patch mmn Cheverton was born Dec quarter 1919.
Birth certificate:
Marguerite Madeline Cheverton, Dec 1895 quarter, Greenwich district, volume 1d page 1030.
I think she may be living in Acton in 1901 (marriage or birth certificate to confirm parents).
Bernard A. Cheverton, 31, solicitor b. Tunbridge Wells, Kent
Cecile M, 29, b. Sydenham Lon.
Margaret M, 5, b. St. John Kent.
Sidney B, 0, b. Acton Middlesex
freebmd also shows a possible marriage for these parents:
Bernard Alabone Cheverton and Cecile Marguerite Mollard, Jun 1894 quarter, Greenwich district, volume 1d page 1331.
Also on freebmd - Bernard A. Cheverton, died aged 49, Dec 1918 quarter, Wycombe district, vol 3a page 1898. And something else interesting - the only entry for a Bernard Cheverton other than Marguerite's father Bernard's birth, marriage, and death, is the birth of what appears to be an illegitimate child in 1917:
Bernard Cheverton, mmn Cheverton, born Dec 1917 quarter Croydon, 2a/432. (Marguerite's son? Or is the name a coincidence?)
Bernard A. Cheverton is away from his family in 1881, at school (his father is possibly George Cheverton who is living with wife and daughters in Tunbridge Wells in 1881). Can't find Cecile at all - probably need to get their marriage certificate to go further back there.