Okay – I have decided (just to be safe) to check information about the three marriages that might potentially be involved in this problem.
1. Thomas DUNSTAN (son of William) married Mary VINCENT (daughter of Thomas) 19th April 1846 Stithians
2. Thomas DUNSTAN (son of John) married Mary KEMP (daughter of John) 8th November 1846 Stithians
3. Thomas DUNSTAN (son of Thomas) married Mary WARREN (daughter of Nicholas) 10th January 1847 Perranarworthal
Because Mary Lambert Dunstan was born about 1855 I have started with the 1861 Census which will hopefully enable me to eliminate at least one of the above marriages.
1861 Mylor
Thomas DUNSTONE, head, mar, 43, husbandman, Stithians
Mary do., wife, mar, 37, Perran
John do., son, unm, 14, ag labourer, Perran
Joseph do., son, unm, 12, ag labourer, Falmouth
Nicholas do., son, 9, scholar, St Feock
Emily do., daur, 8, scholar, St Feock
Caroline do., daur, 5, scholar, St Feock
Mary Ellen do., daur, 2, St Feock
Edwin do., son, 9mths, Mylor
The fact that Mary was born at Perran (arworthal) and they have named a son Nicholas I would think this is the 3rd marriage to Mary Warren.
Daughter Mary is also born about 1858 or 1859 which is perhaps a little late and son Nicholas is baptised as ‘Nicholas Warren Dunstan’ so I think we can safely discard this marriage.
There is a slight problem in 1861 as it appears one of the families is missing! But the 1851 Census should hopefully be able to help in that case.
The bonus with 1861 is that the remaining family might offer the clue that supports my original results.
1861 Tregoning, Stithians
Thomas DUNSTAN, head, mar, 38, ag lab, Stithians
Mary do., wife, mar, 36, dairy woman, Stithians
Thomas do., son, unm, 12, ag lab, Stithians
William do., son, 11, ag lab, Stithians
Edward do., son, 9, scholar, Stithians
John do., son, 7, scholar, Stithians
Mary L do., daur, 6, scholar, Stithians
Ellen do., daur, 4, scholar, Stithians
Jane do., daur, 3, scholar, Stithians
Joseph H do., son, 7mo, Stithians
Grace VINCENT, visitor, unm, 21, dairy maid, Stithians
The ‘visitor’ is Grace VINCENT and I would suggest the possibility that she is actually a sister to Mary.
Notice also that the ‘abode’ in 1861 was Tregoning. From 1854 when John was baptised the family was living at Tregoning and the above is certainly the family of Mary Lambert Dunstan.
(I did manage to find the third family in the 1861 Census. Thomas was not at home but Mary and four children were living at Stithians although it appears all were missing in 1871.)
In the 1871 Census I think I have further evidence that the correct marriage is that of Thomas Dunstan and Mary VINCENT.
1871 Census Tregoning, Stithians
Thomas DUNSTAN, head, mar, 46, dairyman, Stithians
Mary do., wife, mar, 46, Stithians
Thomas do., son, unm, 22, ag lab, Stithians
William do., son, unm, 21, shoe maker, Stithians
John do., son, unm, 17, Stithians
Mary do., daur, 15, Stithians
Ellen do., daur, 14, Stithians
Jane do., daur, 12, Stithians
Joseph do., son, 10, Stithians
James do., son, 7, Stithians
Grace do., daur, 5, Stithians
Flora do., daur, 4, Stithians
Edward do., son, 3 mths, Stithians
Grace MATTHEWS, sister-in-law, mar, 30, Stithians
In this Census we find Grace MATTHEWS who is recorded as ‘sister-in-law’ to Thomas and whose age is a very close match to Grace VINCENT of 1861.
Thomas MATTHEWS, mariner of Padstow, (son of Joseph) married Grace VINCENT of Tregonning (daughter of Thomas) 1st September 1869 at Stithians
Witnesses were Thomas DUNSTAN and Edward Oppy
Thomas Dunstan was probably Grace’s brother-in-law but there is enough evidence now to say that the parents of your Mary Lambert Dunstan were definitely Thomas Dunstan and Mary VINCENT.
This then helps confirm that the marriage you are looking for is that of Thomas Dunstan to Mary VINCENT.
That being the case then it is recorded that Thomas’ father was William Dunstan, miner of Skewes and the only possibility at Stithians is William Dunstan and Joan Wicks who married at Stithians in 1821.
In 1841 William and Johanna (Joan) Dunstan are at Treskewes, Stithians along with their nine (of fifteen) surviving children.
In 1833, 1835 and 1836 the family was residing at Skewes when the burials of three children were recorded and then in 1839 and 1840 a further three children were buried with the residence recorded as Treskewes.
I am still unable to answer the question of how Mary came to be given the name Lambert as a second name.
However I think you can move on confidently now.
CT