I found that there were 1,217 Henwoods on the 1871 census in all of England
In the county of Hampshire there were 112.
Out of those there were 33 Henry Henwoods living in Hampshire.
I found that this fellow was born in 1824, three years before my Henry Henwood. He was living with his father and was a bricklayer apprentice at the age of 47. He must have decided to change professions then.