During the fifteenth century, common law courts began to allow plaintiffs to bring actions for breach of informal promises under the trespassory action of assumpsit. The royal courts built evidentiary safeguards into this new use of assumpsit. This article analyzes how the courts' concern for proof of informal promises had an impact on the shape that the law of contract took on.
"Proving Fifteenth Century Promises."
Osgoode Hall Law Journal