Hi
Sorry I can't help with RO look ups but It might be worth you looking at the Wiltshire look up offers on this board on rootschat.
I presume this is Joseph in 1841 living Melksham
Joseph Seymour age 40 ag lab
Eliza 25
George 20
Rachel 14
all born in county.
I presume this Eliza is another daughter, I wonder where she was born.

She appears to have married Henry Cole 3rd August 1852 at Melksham.
Henry was previously married. His father was Thomas Cole, Eliza's Father Joseph Seymour.
Can't find Joseph in 1851, do you know when/where he died?
Rosie