Here's one I've been debating - it has to be them, despite some "inaccuracies".
Back St, Spittlegate, Grantham (lodging)
Thomas FEELING 23 Traveller on way to Stamford Fair, Staffs Burslem
Sophia 22 Traveller on way to Stamford Fair, Derbys Ashbourne
I don't think they ever made it to Stamford.
Births Mar 1850
Filing * Grantham 14 423 (image looks like Conriat)
Births Sep 1851
Filing Elizabeth Grantham 14 427
Burials at Grantham
13 Sept 1850 FILING Conriat (inf)
16 Nov 1857 FILING William (2)