A few more clues that I have about 
Sarah Mountford / Lawton / Price:
1861 Census: Sarah Lawton, wife, 29 (b.1832) from 
Chell (living at High Street, Knutton)
1871 Census: Sarah Price, wife-mother, 40 (b.1831) from 
Chesterton (living at 127 Sandford St)
1881 Census: Sarah Price, wife-mother, 50 (b.1831) from 
Burslem (living at Mile House)
1891 Census: Sarah Price, wife-mother, 60 (b.1831) no place of birth (at Mile House Inn)
1901 Census: Sarah Price, wife, 70 (b.1831) from 
Blackbull (living at 19 Liverpool Rd, 
Cross Heath)
And I never found her after that, or knew the year she died...  