John Carr born c1807
 

Born c1811 Middlesex (1841) c1807 Pancras, Middlesex (1851)

Married Elizabeth - two possibilities both at St Pancras, either (12 Jul 1829) Elizabeth Mardel or (16 Jan 1832) Elizabeth Maydew. I have a death for an Elizabeth Carr charwoman aged 59 in 1868 in Pancras Workhouse who may or may not be John's wife.

Two children baptised at Pancras - Harriet Ann in 1833 and John in 1835 and four more appearing on the 1851, Daniel c1836 Charles c1844 David c1848 and Edward c1850, all born Pancras.

1833/35 Grafton Street, Pancras
1841 Lower Edmund Street, Camden Town
1851 25 Lower Cambridge Street, Pancras
1861 - missing

Occupation - carpenter 1833/35/51, journeyman carpenter 1841

There is a John Carr in Pancras Workhouse in 1871, a widower and joiner born in Holt, Norfolk who I thought might be him. He's still there in 1881, occupation carpenter but unmarried and I have the death certificate of a John Carr carpenter aged 75 in Pancras Workhouse in 1883. However there is then a John Carr in 1891 in there aged 80 born Ravenham Norfolk, a widower and carpenter who appears to die the following year so I'm a tad confused.

There is a John Carr born 1811 and baptised in Bloomsbury, father Daniel, carpenter of Pancras who is a possible

You could get a birth certificate for one of the children born after 1837 to get Elizabeth's maiden name, if we can find a birth registration. David could be David George Carr whose birth was registered Sep 1849 St Pancras?