I followed up the obituary that you used to calculate the date of birth for Susan Howlett (I have access to British Newspaper Archives)
She died on 1st March not Jan as in the index. The notice from the Norfolk Chronicle 6th March 1869 reads
On the 1st., inst at North Walsham in her 76th year, Susan relict of the late Mr Robert Howlett carpenter and builder
This I think is the same lady living at Free School Road, North Walsham in 1861,
Susana Howlett, head widow, 66 proprietor of houses, born Knapton Norfolk.
Staying with her is an Elizabeth Cornish also from Knapton.Next door is a Robinson Cornish and family. He was a master carpenter employing 5 men and born in Knapton.
There is a marriage of a Susan Cornish, spinster of this parish to Robert Howlett, widower of this parish at Knapton on the 6th of Nov 1823 at Knapton. (Elizabeth Cornish was one of the witnesses)
Robert and Susannah Howlett are to be found on the 1841 census in Free School Road, aged 45 and 40 (supposed to be rounded down to nearest 5 years so he could be nearly 50, she nearly 45, if accurate!) He was a carpenter.
In 1851 Robert 60 and Susannah, 56 are still at Free School Lane, North Walsham. He gave his birthplace as Pulham, he was a master carpenter employing 2 men.
Basically, this couple don't appear to be the couple from Gooderstone.