Hi,
It looks like Mary and George moved to Wales

1891 RG12/4635 f.114 p.8 Llangar, Merionethshire, Wales
Town: Gwyddelwern
Rhug? Terrace
George PRICE Head 31 Railway Station Master Denbigh Rilston Mills
Mary E PRICE Wife 27 Cheshire Birkenhead
Grace M PRICE Daur 4 Scholar Shropshire Dawley
Edith M PRICE Daur 2 " " ??wley Village
Allen Hayes PRICE Son 2mo Merionth Cynwyd?
1901 RG13/5215 f.95 p.17 Burton, Flintshire, Wales
Rossett Station House?
George PRICE Head M 41 Railway Station Master Denbigh Wrexham
Mary Elizabeth PRICE Wife M 37 Cheshire Birkenhead
Edith PRICE Daur S 12 Salop Lawley
Allen Hayes PRICE Son S 10 Merionthshire Cynwyd
Gladys Sarah PRICE Daur S 7 " " " "
Ethell Harriet PRICE Daur S 5 Cheshire Tranmere
Rosamund Emma PRICE Daur S 3 Denbigh Ruabon
Regards
Daisy