Two cases from the New York Court of Appeals, "Thomas v. Winchester" and "MacPherson v. Buick Motor Co.", were also influential in the formation of the neighbour principle. In "Thomas", Thomas had purchased and administered belladonna to his wife after it was mislabelled by Winchester, the dealer, although not the seller, of the treatment as extract of dandelion. Thomas' wife became seriously ill as a consequence and Thomas successfully claimed in negligence; Winchester's behaviour had created an imminent danger which justified a finding of a duty of care.