Texas Estates Code - EST § 51.201. Waiver of Notice of Hearing

(a) A legally competent person who is interested in a hearing in a probate proceeding may waive notice of the hearing in writing either in person or through an attorney.

(b) A trustee of a trust may waive notice under Subsection (a) on behalf of a beneficiary of the trust as provided by that subsection.

(c) A consul or other representative of a foreign government whose appearance has been entered as provided by law on behalf of a person residing in a foreign country may waive notice under Subsection (a) on the person's behalf as provided by that subsection.

(d) A person who submits to the jurisdiction of the court in a hearing is considered to have waived notice of the hearing.