1851 Census Henry is a Widower, still living in Dibden
Henry BARNES, 74, ( born c 1777) Head, Widower, Shipwright, born Fawley, Hampshire
HO107/1668/287/3
Next door is;
Thomas BARNES, 40, Head, Mar, Mariner, born Dibden
Mary, 42, Wife, Mar, Mariners wife, born Hawley
Henry, 2, Son , born Dibden
Please note that Hythe/Dibden are right next to one another.
Also Sarah's christening may have occurred in the nearest large Town.
Thomas is probably a Brother of Sarah.
This is the only Henry, Shipwright, I can find with a daughter Sarah who would still be at home before her 1842 Marriage.
Birth/Christenings (Extracted) from IGI at Familyserch;
Thomas BARNES
Birth, 07 February 1811
Christened, 10 March 1811, Fawley, Hampshire
Parents, Henry BARNES and Anne WELSH
Fanny BARNES, 31 July 1825, Dibden, Hampshire
Parents HENRY Barnes and ANN
(submitted with batch no)
Now it is possible that she is a Grandchild and Henry Snr had a child Henry who married an Ann also.
But also a 25 year span of children is not unusual also ( I am from a Family like that!)
MARRIAGE, extracted IGI;
Henry BARNS
Anne WELSH, 08 October 1799, Fawley, Hampshire