I must admit that I spent hours searching for the family and ended up getting Horace's birth cert image which was for Sept 1891. The address was Pine Grove, Weybridge, Surrey and his father was a domestic coachman - which didn't help much 
Kay
Kay - I’ve spent sometime again looking with loads of different variables to see if I could find the family in 1891 but they are very elusive indeed
That was really nice of you to purchase the digital image of Horace’s birth to give their address - were they just missed off I wonder

This should be the family
Robert Law born c1853 Kelsall occ coachman
Sarah Anne born c1855 London
Ethel born c1887 Guildford
Mabel born c 1886 Guildford
Eveline born c1889 Guildford
Mary Elizabeth born c1890 >>>>bpt Weybridge father occ coachman
Horace born c1891 >>>>bpt. Weybridge Father occ coachman>>>b/c abode Pine Street
Muriel born c1893 >>>>bpt Kelsall father occ green grocer
Robert Hedley born c1895>>>>bpt Kelsall father occ green grocer
All have either mmn Gurrey/Gurney on GRO
Robert LAW 30, occ coachman & Sarah Ann GURNEY married 1885
Marriage 2 Oct 1915 Kelsall, St. Philip
Eveline Law 25 Father Robert Law, occ gardener
Spouse Ellis Walker
One witness Mary Elizabeth Law
https://www.findagrave.com/memorial/233902526/eveline-walkerMarriage 8 Jun 1922 Altrincham, St. John the Evangelist
Muriel Law 26 Father Robert Law occ gardener
Spouse William Chaddock
One witness Mary Elizabeth Law
Marriage 22 Jul 1924 Kelsall, St. Philip
Robert Hedley Law 29, grocer’s assistant Father Robert Law occ gardener
Spouse Mabel Emily Pine
Three witnesses, 2 were Mary Elizabeth Law & Robert Law