To repudiate or renounce, especially one's heirs
The reasons for an heir to repudiate 
may vary: it could be that they would prefer for the other heirs to ... property of the 
children with the surviving spouse being allowed to live in one of the properties... [DOC] [TLE] Disowning | Define Disowning at Dictionary.com [PAR] ... repudiate; renounce: to disown one's heirs; to disown a published statement.