The ancestors of Robert Edwards of Teiliau House appear to have
settled there at some time between 1813 and 1838, judging from the
wills available at the National Library of Wales.
The will of Robert Jones of Teilie bach [NLW B/1813/165] dated 1810
and proved in 1813 appears not to be related. He named his son John
Robert co-executor and residual legatee. Other sons were called
Robert Jones and Richard Robert
The probate of John Edwards of Teiliau Bach [NLW B/1838/149] (d:28
July 1838) mentions his son Edward Jones of Telia Bach.
The circa 1840 tithe apportionment for Ffestiniog lists Edward Jones
as the farmer of Teiliau Bach with Rev. Lloyd Wynne owner.
This can be seen at the NLW tithemap web site.
https://places.library.wales/I looked for evidence of the father of John Edwards, who would likely
be called Edward John or Edward Jones or perhaps with some other second
name, but I found nothing persuasive. Your best bet would be to look
through the parish registers and graveyard inscriptions for
Ffestiniog, and then the neighbouring parishes of Maentwrog and
Trawsfynydd.
Possibilites are Edward Jones NLW B/1809/128 of Brynrodyn, Maentwrog,
who died 30 Oct 1809 and is buried at Ffestiniog, and Edward Roberts
of Brynhir, Trawsfynydd NLW B/1809/131.