After there has been a contract to make a will it is often said that the promisor is a trustee of the property for the use of the promisee. This statement is usually offered as a reason for or an explanation of the relief granted in a particular case, without any indication as to how such a premise was arrived at and without any consideration of other possible results that might How from the designation of the relationship as a trust.
Bertel M. Sparks,
Legal Effect of Contracts to Devise or Bequeath Prior to the Death of the Promisor: II,
Mich. L. Rev.
Available at: https://repository.law.umich.edu/mlr/vol53/iss2/3