Certain children entered into a contract during the lifetime of their parents, by the terms of which it was agreed that if the will of either parent should favor some of the children above others, the favored children would waive their rights under the will and share equally in the real and personal estate of the parents. The will of the father left the whole estate to the mother. Her will omitted any gift to one of the children, and this suit was brought by an assignee of that child to obtain specific performance of the agreement. Held, that the contract, made with the design of defeating the will of the parent, was void as against public policy. Graef v. Kanouse (Wis. 1931) 238 N. W. 377.