Illinois Supreme Court February 19, 1909 (Klussman v. Wessling)

Per Curiam:

The rule is settled in this State that a person owning property may make a contract to dispose of it by will in a particular way, and that such a contract, when based upon sufficient consideration and clearly established, will be enforced in equity. (Oswald v. Nehls, 233 Ill. 438; Jones v. Abbott, 228 id. 34.