Pryce,
I don't know whether or not you have any census information for your PRYCE/ASTLEY families, but in 1861 I have found the following:-
RG9/4247, folio 75, page 1 - Wtragau in the Parish of Llanwnog, Township of Uwchllawrcoed
Richard Astley Head 49 Farmer of 8 acres
Jane Astley Wife 40 Farmer's Wife
Jane Astley Daughter 10
Margaret Astley Daughter 3
Ann Astley Daughter 3 months
All were born in MGY Llanwnog.
I have looked for George Pryce with father William and found nothing, although the family listed below may be a possibilty

Spelt Price.
RG9/1841, folio 77 page 49 - Snead Cottage, Parish of Snead Montgomeryshire
William Pice Head 44 Ag Lab
Ann Price Wife 40
Ann Price Daughter 12 Scholar
George Price Son 9 Scholar
William was born in MGY Kerry, Ann & daughter Ann were both born in SAL Chirbury, and George was born in MGY Snead.
Jan