Excellent news Lynn!
I think we can now start to pull the threads together.
We previously established that Samuel was born in the early part of the 1840s. Indeed, we found the birth records of a Samuel Josiah Bennett (parents Nathaniel John Bennett and Mary Ann Wright) dating from 1842. I think this is very likely to be your man, so you might think about getting the birth certificate from the reference provided earlier.
We also found a Samuel Bennett (father Nathaniel and Mary Bennett) in the 1851 & 1861 Censuses. However, this one had the middle initial ‘N’ and was a little too young.
So let's work with this one instead ...
1851 Stoke Damerel (Morice) Devon
HO107/1882 folio 188 pp38-39
14 Gronby Street
Nathaniel Bennett, head, 62, shipwright for K [something], Cornwall
Mary Ann, wife, 51, Devonport Devon
Jane, daur, un, 24, Devonport Devon
Nathaniel, son, 19, apprentice boot closer, Devonport Devon
Sarah, daur, 14, plain work charwoman, Devonport Devon
Ellen, daur, 13, scholar, Devonport Devon
Selina, daur, 11, scholar, Devonport Devon
Samuel Bennett, son, 9, Devonport Devon