A claim of “insane delusion” resembles a claim of lack of testamentary capacity and is sometimes considered to be a sub-category of testamentary capacity. An “insane delusion” is the belief of supposed facts that do not exist, and
- which no rational person would believe.
The courts have held that a testatrix’s conviction that one or both of her disinherited children were responsible for deceased’s son’s death entitled contestants to jury instruction on insane delusion as belief would not have been entertained by “rational” person.
A contestant seeking to set aside a will on the grounds of insane delusion must also show that the delusion caused the testator to dispose of his property in a way which he would not have “but for” the insane delusion.
Under Texas law, a testator lacks testamentary capacity if the terms of his or her will are influenced by an insane delusion. An insane delusion is defined as “the belief of a state of supposed facts that do not exist, and which no rational person would believe.” If there is a foundation in fact for the belief, the belief is not an insane delusion, “even though the basis may be regarded by others as wholly insufficient.” A mere misunderstanding, mistake of fact, or illogical conclusion does not amount to an insane delusion. Rather, the misconception of fact must be “due to some organic defect in the brain or some functional disorder of the mind.” Thus, to support a claim for insane delusion, there must be evidence “not only of a mental error affecting the terms of the will, but that the persistence of this mental error was caused by defective cerebration.”
By Robert Ray a Texas inheritance attorney. The foregoing information is general in nature and does not apply to every fact situation. If you are concerned about Texas inheritance laws, inheritance rights, probate limits, have a family inheritance dispute, a property dispute or want to know the reasons for contesting a will or protecting a will from a contest and need an inheritance lawyer, we can help. Please click on the “Contact Us” tab above and use the contact form to contact us today. We are Texas inheritance lawyers and would love to learn about your case. There is no fee for the initial consultation.
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