Note that familysearch.org transcription of Lavernock parish records list the Gwyn children surnames as "David"
"Wales, Glamorgan Parish Registers, 1558-1900," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VFZW-GTS : 5 December 2014), David Gwynn and Mary George, 1786; Marriage, citing Penarth, Glamorgan, Wales, Glamorgan Family History Society, Cardiff.
Glamorgan : Penarth : St Augustine : Bishop's Transcript : "Parish Register" database, FreeREG (https://www.freereg.org.uk/search_records/5cc4b013f493fd818f13da5f : viewed 9 Sep 2022) marriage David Gwynn to Mary George 17 Feb 1786
Glamorgan : Lavernock : St Lawrence : Parish Register : "Parish Register" database, FreeREG (https://www.freereg.org.uk/search_records/5f5e65c1f493fd1e7efd059f : viewed 8 Sep 2022) burial David Gwynn 08 May 1809
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