I've hit a brick wall in regards to my 3x GG and GM as whilst I have found his death in 1867, both seem to entirely disappear from the 1861 census and I can't find anything about her before she married or after her husband died.
John Leach was born 11/08/1816 in Shoreditch and for most of his life lived in and around the Kings Cross / Islington area, in particular Swan Yard in Islington, Holywell Lane, Shoreditch, Rodney Street, Kings Cross, Charles Street, Kings Cross and Crescent Street, Kings Cross. During this time he worked as a Harness Maker and later as an Army Accoutrement Maker.
He married on 29/04/1834 at St. Leonards Church, Shoreditch a Louisa Spencer who was born in Derbyshire.
He died in 1867 and was buried 18/03/1867 at Saint James, Swain Lane, St Pancras.
Louisa Spencer was born c1813 in Derbyshire and I have her and her husband on the 1841 and 1851 census's but that's it.
Between them they had 5 children:
John Leach b 17/07/1834 Islington d 04/01/1890
Louisa Ann Leach b 08/03/1837 St Pancras
Henry Leach b 17/11/1840 St Pancras
Charles Leach b 08/06/1843 St Pancras d 1874
William Leach b 10/12/1846 St Pancras d either 1852 or 1858
I have John and Louisa in St Pancras
1841 Census: HO107/685 Book: 5/ 31 p 59
1851 Census: HO107/ 1493/685 p 81
I can't find either on the 1861 Census. Nor can I find a death for Louisa or a second marriage for her nor can I find a convincing second marriage for John so I think he possibly died before her.
Does anyone have better sleuthing skills than me?