Dear Mustfindthem
According to the burial record Anne Williams (nee Davies) was aged 66 years
and William Williams was aged 70 years.
Below is a link to a photo of Silian Church.
http://www.geolocation.ws/v/W/File:Silian Church - geograph.org.uk - 735625.jpg/-/en
Silian is about two and a half miles from Lampeter.
There is a possible baptism for Anne Davies at Silian Parish Church on 28th Nov 1850
Parents : Father - John Davies (a Farmer) and Mary Davies of Ty'n yr Heol, Silian (Vicar: David Williams)
Looking at 1851 Census of Ty'n yr Heol (on Census down as Tynyrhewl, Silian) Piece 2483 Folio 218 Pg 10
John Davies, Head, aged 40 Farmer of 15 acres born Ystrad, Cardiganshire
Mary Davies, wife , aged 29 born Llandysul Cardiganshire
Sons - David, age 9; Evan, age 6; Samuel, age 3; all born Silian Cardiganshire
Daughter - Anne age 7 months born Silian.
Also there was a house servant = Margaret Davies age 16 born Llandysul Cardiganshire
A possible baptism for William Williams - 7th June 1850 at Betws Bledrws
son of Joseph (a Farmer) and Sarah Williams of Pantwangoy, Betws Bledrws (Charles Lloyd, Rector)
Betws Bledrws is also about two and a half miles from Silian.
Hope this helps a little,
Regards, Alltcafan