Hi Frank
On the 1851 census the following are living at Low Brook Street, Oswestry
William Davies, abt 1822, born Pentrevoelas, Denbighshire - Coachman
Harriet Davies, abt 1822, born Whittinghton, Shropshire - wife
Samuel Davies, abt 1849, born Oswestry, Shropshire - son
Sarah A Davies, abt 1848, born Oswestry, Shropshire - daugh
Hope this helps
best regards
Fran