Persons who are partakers, or have an interest in any action or thing, or any relation to another. 2. There aye several kinds of privies, namely, privies in blood, as the heir is to the ancestor; privies in representation, as is the executor or administrator to the deceased privies in estate, as the relation between the donor-and donee, lessor and lessee; privies in respect to contracts; and privies on account of estate and contract together.