In Kohlhausen v. Baxendale, the court affirmed a summary judgment for a trustee on the basis of an exculpatory clause in a trust document. No. 01-15-00901-CV, 2018 Tex. App. LEXIS 1828 (Tex. App.—Houston [1st Dist.] March 13, 2018, no pet. history). A mother created a testamentary trust for the benefit of her son Kelley