I've read through the thread and I hope I'm not zipping off on a tangent, but am I correct thinking you haven't found Mary Smith and Joseph in 1861?
How about this RG9 3654:
Joseph Smith 28, labourer, cant work out where born,
Mary Smith 28 born Flockton
Joseph William Smith age 2, born Lackenby
all living at South Bank Terrace, Guisborough
Not Wingrove, but it does start with W
Joseph William's birth appears to be reg Dec Q 1858, Guisborough 9d 398
Family search has Joseph William Smith, parents Joseph and Mary Smith, chris 13 April 1859 at Eston (nr Lackenby).
Flockton, Mary Smith's birthplace in above census is about 2 miles SW of Overton, in the Huddersfield/Barnsley/Wakefield area.
Had a quick look on 1871 census, but couldn't find this family there.