Hi there Paul
These are the only Kell associated with Allerthorpe or Pocklington on the 1871 census on line at the moment, but it has not all been transcribed as yet
Name Age in 1871 Birthplace Relationship Civil Parish County/Island
Mary Kell 26 Allerthorpe, Yorkshire, England Daughter Allerthorpe Yorkshire
Thomas Kell 66 Holme Upon Spalding Moor, Yorkshire, England Head Allerthorpe Yorkshire
William Kell 60 Pocklington, Yorkshire, England Head Pocklington Yorkshire
Chris in 1066Land