Do you have the date for the land dealings or any other information about it? I am researching Weston Allen who was born in 1796. He was married to Margaret Van Alstine, who died prior to the 1861 census. I believe they had a daughter Margaret who was married to Adam Codington. Weston's son Joseph Allen was living with Joseph and Elizabeth (Laraway) Codington (Adam's parents) in 1851 in West Zorra. I haven't found any connection to the surnames Eaton or Lampman. Perhaps Alvira was related to the Laraway or Van Alstine families or maybe Adam Codington was just witnessing the sale of land by his father in law. I hope that this information in helpful.