A few comments
Marriage: Robert was born in Skipton, Ann in Bedale or Pickhill - why marry in Scarborough? A long way from the other places associated with the family. Did either have relatives in Scarborough? Were the witnesses related? If they had only been in Scarborough for the statutory 3 weeks before marriage, it is not surprising that a mistake was made with occupation and spelling of Ann's surname.
Ann's age varies a lot between 1851 and 1861 censuses as well as place of birth. Who would fill in the census form? Probably Robert in 1851, he could write his name after all. So he wrote what he believed was true without bothering to ask Ann. In 1861, Robert had passed away so it was left to Ann. Whether she filled it in herself or not (she had made her mark on marriage), the information on pob and age would come directly from her. I'm more inclined to think Pickhill than Bedale for pob.