I Am Looking for Samuel Long OR Possibly John Trent Born Circa 1778 IN England He Would Have Had a Son John Born Circa 1814 and a Daughter Mary Born...

According to the 1841 census for Newington,Surrey, Samuel age 63 was no born in Surrey, Mary age 33 is entered below him, also not born in Surrey and below her name there is a John age 6 who was born in Surrey.
Above these names is a John age 27, not born in Surrey and Ann his wife age 25 along with a son Samuel, which should have read William Samuel, age 2 both are born in Surrey.
John and Ann married in 1835, their first child John was born in 1836, so I am wondering if the child John marked with Samuel and Mary is the same John. The age matches.
If this is correct, I would like to think that Samuel is John's father and Mary his sister.
I haven't been able to find any records of a Samuel Long, nor a Samuel John born in England. There are numerous Samuel Trent's but nothing that matches up with having a wife named Mary who would have been born in 1808.
Somerset and Dorset seem to be where most of the Trent families lived, with a few exceptions.
If there is anyone out there with the name Samuel in their Trent family Tree, your assistance would be greatly appreciated to solve this puzzle.