Marshall, Crocker, Luxton

I am looking for information on the following people. If anyone has information please feel free to email me: jess_kruse@hotmail.com. I have more information and I would love to confirm what I have and am more than willing to share.
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John Marshall - born February 28, 1831 in England; died February 07, 1911 in Cazenovia, Wisconsin. Batipzed: May 11, 1814, Petrockston, a parish in North Devon.
He married Ann Nichols Luxton - born February 16, 1845 in England; died April 09, 1918 in Cazenovia, Wisconsin.
Parents of John: Joseph Marshall and Mary Crocker
Parents of Ann: John and Grace Luxton (John and Grace were from Moor Mills. John was a shoemaker and baptized at Petrochstour in North Devon on 12th March 1845.)

also looking for information about a family living in Exeter in 1850-1880

Could you be more specific? What family surname? Is it a particular couple that you are looking for their parents or children? Do you have any birthdates? From the information I have now, none of my family is from Exeter. They are from rural areas in central Devonshire (Petrocksotwe, Frithelstock, Merton, Winkleigh)
Best of Luck
Jessica