think i shall have to order a copy of that book to get an even better pic of llandudno.
so from your info from that, and my going though all the pages of the census 1841 for the upper township of llandudno enumeration district 3 !! (yes it seems everyone was a copper miner).
and i find tan yr ogof peny yr ogof ty coch all close entries to each other
kings head is entry no3 on the 1841 census of the uppertownship (another william owen and family being the publican at that time)
tan yr ogof - entries 33-35 entry 33 a williams family, 34 jones family and entry 35 Hughes family
entry 36 tan yr allt robinson and jones
Pen yr ogof entries 37-39entry 37 Kendrick family (mentioned )
entry 38 jones family
entry 39 owens
as mentioned edward copper miner age 20 and margaret(nee ellis) age 20, and maybetheir child ann was not actually born as yet and her birth wasnt 1840 but after this census sometime. And the ageing thing would make them both the right age. And they lived with griffith owen whom was older than they were 25yr according to the census which means anything up to 30 !! and his wife ann 15 but could have been anything up to 20 and they are the ones you mention. Griffith Owens " a quiet Christian" (Rowlands) moved to the Morfa from Pen Yr Ogof where he had been a close neighbour of Thomas Kendrick around 1842.Entry 40 is seowns or leowns roberts agricultural labourere and lowe
entry 41 is a shop pritchard: and this could be what became the butchers possibly
entries 42 43, 44 are ty coch42 jones family
43 thomas owen and mary and family
married owner of ty gwyn mines daughter mary brookes 44 edward owen and elizabeth
the brother and sister that became the butcher : father william owen of pink farm - penymynedd isaf (if pen yr ogof is over the cave then i guess tan yr ogof is under the cave

?)

i read the thread on the caves interezsting stuff.
thus from my previous post of the entries.
Entry 43 living at ty coch
thomas owen 20 smith
(married owner of ty gwyn mines daughter mary brookes )mary owen 25
thomas 1
ann 2mnths
entry 39 pen yr ogof
Edward Owen 20 copper miner ( my lot)
Margaret Owen 20
Anne Owen 15
Griffith Owen 25 moved to the morfa with wife ann from tan yr ogof terrace which was by ty coch farm
50yds or so could these be brothers ? orotherwise related, is to be discovered
entry 44 ty coch
Edward Owen 25 farmed ty coch became a butcher had shop down the road (on census there is a shop entry 41 ) father william owen of pink farm - penymynedd isaf
Elizabeth Owen 20
ok now i have that sorted in my head,
the father of my edward was lewis Owen from Gyffin (wherever that is) whom married ellinor morris march 1807 in llandudno, no idea if there are siblings as yet, and lewis's father was a william owen married to an elizabeth edwards married feb 1760 Llandudno. again no idea if there are any sibs, but i still have to hunt these up for confirmations. and or connections to any of the other Owens above.
my form for the marriage certificate of robert hughes and ann owens has been posted now. so hopefully your lovely folks at the archives there in Lloyd street, will be receiving it soon. and maybe we will get the hughes line going back a generation. and still havnt foind anything on the their children. ah well c'est la vie. it will happen at some point,
goodnight for now.