do you include Cruddas in your one name study. I am currently following the Cruddas family in the Co. Durham and Northumberland but some of the family seem to disappear. I have a marriage for Frances Cruddas who marries George Tebb in 1883. She was born in 1864 to John Cruddas and Martha Forrest. I have been unable to find John's whereabouts in 1851 but I do know that he married Martha in 1854 in Whitworth church Spennymoor. His father was Thomas. Do you know of this Thomas?. All the males were miners and moved about a great deal as was the custom with many miners. I can make a list of the Cruddas, Croudace etc who appear in the 1851 census index for several parts of Durham and Newcastle if you do not already have that information.