The Texas Estates Code provides that in order for a Will to be valid, the person making the Will must not only be of sound mind, but also
- have attained the age of eighteen years;
- be or have been married; or
- be a member of the armed forces of the United States, an auxiliary of the armed forces of the United States, or the United States Maritime Service.
Unless a minor is (or has been lawfully married); or is a members of the armed forces or an auxiliary thereof, or of the Maritime Service, he or she will not be able to make a Will.