Oregon Revised Statutes Probate Law § 112.195

Unless a contrary intent is established by the instrument, all references in a will, deed, trust instrument or other instrument to an individual or member of a class described generically in relation to a particular person as children, issue, grandchildren, descendants, heirs, heirs of the body, next of kin, distributees, grandparents, brothers, nephews or other relatives shall include any person who would be treated as so related for all purposes of intestate succession, except that an adopted person so included must have been adopted as a minor or after having been a member of the household of the adoptive parent while a minor.