recap of my Swans.
Lydia SWAN b 1775 Cowpen Baptised 6 July 1775 Horton Parish (as per Family search BT`s) unable to check on-line as 1775 page is missing. Married John Gledson 5 Aug 1797 aged 22, at Earsdon Parish (is on on-line BT`s).
On Family search
https://familysearch.org/search/record/results?count=20&query=%2Bgivenname%3Alydia~%20%2Bsurname%3Aswan~%20%2Bbirth_year%3A1775-1775~ it states her parents were Robert and Dorothy Swan.
Robert b 1750 d 1819 Cowpen High House aged 69.
Dorothy daughter of Robert Swan( see the other gravestone inscription) of Cowpen High House and grand-daughter of the above Joseph Swan died April 9 1813 aged 57 years.
So looking at the quote Dorothy was probably a sister to Robert (although I have not got her in my tree. As both had a connection to Cowpen High House.