Another mystery

This part of the family have always been a bit of a mystery but I have myself thought it is JNV seniors brother John.
I found the Marriage and Baptism records in Southwolds many years ago before I found the Yarmouth family even.

The photo copies with the census record for 1841 on have not saved well and are too faded to read.
But I did write a bit down at the time which says, Mary Vlieland was born Mary Grimmer about 1801 Rayden, her mother Sarah Gimmer.
The 1841 census says Mary Vlieland aged 35 (on the 1841 records the age was always rounded up or down to the nearest 5 years )was a female servant in the village of Wrentham Suffolk.
No mention of a husband but he could have been at sea.
Our John Vlieland is at his Sisters in 1841, Chapel Square, Yarmouth at this time aged 45 born in foreign parts.
She marries Robert Denny on 19th April 1842 just two months after the death of John Vlieland of Yarmouth.
Martha Burcham is a witness who is also a female servant with Mary on the 1841 census. The 1851 census says Robert Denny and family are living at White House Farm Wrentham . Robert Denny aged 54, a farmer of 41 Acers, Mary his wife aged 49, Mary Ann daughter aged 6, Sarah Ann daughter aged 3.
Mary’s mother is also here, Sarah Grimmer aged 79, a pauper born Southwolds.
Thanks for this information Gilly !
 

Church records for Great Yarmouth

On 2 Oct 1838 a John Vlieland full age Bachelor, sailor, (father Yarhan Vlieland Sailor) marries Jane Francis Martin, full age, widow, dressmaker (father William Waters, sailor)

John marriage to Jane.

This Jane is Jane Francis Waters born and christened in 1802 in St Nicholas Yarmouth daughter of William Waters and Anne Covell and widow of Michael Martin.
On 28 Feb 1842 above John dies aged 45 years Mariner resident "on the Walls" @ Gt Yarmouth. (death certificate)
Burial at dissenters graveyard, Market Street, Great Yarmouth, Grave 609, 8th March 1842 aged 45 years.
could this Jane be the same ????
Jane Vlieland is born abt 1806.
Her name comes up in the criminal registers.
England & Wales, Criminal Registers, 1791-1892
Court, Land, Wills & Financial
Jane Vlieland
Location of Trial: Norfolk, England
Name: Jane Vlieland
Birth: abt 1806
Residence: 5 Mar 1846 - Norfolk, England
Could this be the wife of John Vlieland born 1802?
On 2 Oct 1838 a John Vlieland full age Bachelor, sailor, (father Yarhan Vlieland Sailor) marries Jane Francis Martin, full age, widow, dressmaker (father William Waters, sailor)
This Jane is Jane Francis Waters born and christened in 1802 in St Nicholas Yarmouth daughter of William Waters and Anne Covell and widow of Michael Martin.

Also we find in the Southwold Diary
1840 Nov 21st John Vlieland agd 15 drowned at Northfleet , Thames,dec fell from the rigging of "the Gratitude "Seeton sluice.