Texas Finance Code - FIN § 274.113. Venue

(a) An action under this subchapter for a fiduciary account resulting from a decedent's estate or guardianship must be brought in the county provided for by the Estates Code with respect to the probate of a will, issuance of letters testamentary or of administration, administration of a decedent's estate, appointment of a guardian, and administration of a guardianship.

(b) Except as provided by Subsection (c), an action under this subchapter regarding any other fiduciary account must be brought in the county of the situs of administration of the account, notwithstanding a statute that would set venue in the location of the fiduciary's principal office.

(c) A beneficiary of a fiduciary account described by Subsection (b) may elect to bring the action in the county in which the principal office of the first affiliated bank that transferred the account under this subchapter is located.