I've been following up the four Alice birth registrations in St Georges Hanover Square, including looking at their siblings to help with searches.
Richard Cox was born in Stapleford CAM and his father was William Cox, an ag lab. So we are looking for possible brothers who fit the bill. In addition, we shouldn't find any of these Alices in 1891, except at 87 Westbourne Street.
Alice mmn Field Q1 1884
Baptised March 1884 at St John, Westminster.
Parents William Cox & Alice Field married Dec 1882 at St John, Westminster
Age at marriage gives William’s birth as c1849 and he said his father was William, a cabman. In fact he might have been the illegitimate son of Amelia Cox baptised Dec 1850 at StGHSq.
In 1891 Alice is with her step grandfather, Samuel Marks at 1 William Street, Lambeth [RG12/395/31/12]
Alice May mmn Plater Q2 1884
This was the trickiest one to work on, but the Cox-Plater combination is rare..
Henry Cox married Jane Plater Q1 1882 Aylesbury BKM. They moved around quite a bit, and I haven’t been able to pin down Henry himself.
However, in 1891 Alice is with her mother and siblings in Aylesbury Workhouse [RG12/1146/135/4]
Alice Elizabeth mmn Haynes Q3 1884
Baptised Oct 1884 at Holy Trinity, Westminster.
Parents Edmund Frederick Cox and Elizabeth Haynes.married Q3 StGHSq.
I think Edmund was born 1855 in Westminster and his father was Henry.
In 1891 Alice was with her widowed father at 3 Broughton Street, Battersea [RG12/424/101/26
Alice Edith mmn Goddard Q3 1886
No baptism found, but Henry Cox married Eliza Goddard May 1878 at St Martin, Kentish Town. The marriage shows he was born c1856 and his father was William Cox, labourer.
However, 1891 shows he was born in Harwell BRK. The whole family, including Alice, are at 10 Sutherland Street StGHSq [RG12/75/101/4]
So, none of the fathers appear to be brothers of Richard Cox and, crucially, all the Alices are accounted for in 1891 and they are not at 87 Westbourne Street.
Next step – Jane Bridge?