I've got him in 1851 from his dau's birth cert. but the family vanishes until his son appears with family in 1881.
in 1851 I have
James La Roche, 25, Surrey St Geo. the Martyr, Plasterer
Elizabeth, 25, St geo the Martyr
James, 3, City of London
Elizabeth, 2, Surrey, Christchurch
only the son James is ever heard of again and not until his marriage in 1872
no trace of any of their deaths on 1837online 1852-1881
its very frustrating
I thought James' (senior) mother's death cert. might flush him out as informant, but she was run over by an omnibus and the coroner was informant!
Oh Well - the joys of genealogy
Cheers
Chris