Sorry Helenna but I cannot identify John in 1841.
I think he was already married. Free BMD has this
Marriages Dec 1838
CHAMPION Harriet Elham 5 269
EVENDEN William Elham 5 269
STOKES Eliza Elham 5 269
TASKELL John Elham 5 269 Young Susan Elham 5 269
I checked the marriage on the full indexes and on the Kent Registration site and the name there is John Tassell.
Strange that their first child was not born until 1843.
Family search has a submitted entry for John Tassell born about 1811 which may be correct as the death date of 1902 looks right. (see
http://www.familysearch.org/). The Free BMD entry is as follows
Deaths Sep 1902
Tassell John 91 Bridge 2a 473
The 1851 census entry is as follows - sorry but the image is very poor and hard to read
Horton Park, Monks Horton
John Tassell Head Mar 40 Farmer 394? acres employing labour?b Kent Wye
Eliza Wife Mar 37 b Kent Hythe
Lilla Dau 8 b Kent Monks Norton
Eliza Dau 6 b Kent Monks Norton
Theodore Son 3 b Kent Monks Norton
James Son 9 months b Kent Monks Norton
Susanna Mount Servant 16 House Servant b Kent Newington
An interesting point is that family search indicates that John's father was James Tassell and his mother Mary Cook - John's son Theodore had the middle name of Cook.
Not sure whether this is going to help you at all.
Barbara