Think, I'm getting 'somewhere'....
There is on Ancestry - a Marriage at Gloucester, St Philip and St Jacob
on the 26 April 1750 - of George NOTT and Elizabeth COX, both of this Parish
and transcript says, they married by Licence.
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As my husband's material line - have links to Bitton -
There is a website for Bitton Families - which does include Wills (I've only just started looking)
www.bittonfamilies.comby there are Wills - including this one.
Will of Hester WILMOTT
1755, Will of Hester WILMOTT of Bitton, Widow
`Proved 21 January 21
In the name of God Amen, I Hester Wilmott of the parish of Bitton etc. etc.
..... I give devise and bequeath the same unto my daughter Elizabeth NOTT wife of George NOTT of the parish of St Philip & Jacob in the county of Gloucester millwright........
witnesses: Betty COX, Sarah NOTT, Edward YOUNG
and then 1754
Admin of John WILMOTT of Bitton Coalminer Intestate
Hester WILMOTT Widow of John of Bitton renounced the letter of admin of his estate which was committed to Elizabeth NOTT his daughter wife of George NOTT etc.
Witnessed: Betty COX: Edward YOUNG.
On the thirteenth February 1754 Elizabeth NOTT his daughter swore to adminster the estate to which was attached the bond of George NOTT millwright James (HONE?) salt refiner and John WITCHELL baker all of Bristol.
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There is a death of an Elizabeth NOOT (on Ancestry) - burial date 22 July 1756, Bristol.
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Going back to Robert NOTT who married in Bristol, father George.....
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On the Bitton website there is marriage earlier for a Robert NOTT (family names)
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You mention you NOTT's were Millwright's......
There is a Baptism at Hanham Abbotts St George - 26 August 1759 of Silve daughter of George NOTT
(? George may have married twice)
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Also on the Bitton site - a Palmer will etc.
Mary PALMER b 1788 - wife of Robert NOTT of Bitton, wire drawer
Mary is shown as Mary NOTT, daughter of Hester and Daniel in the baptism records. etc etc.