In order to make a will, the testator must have testamentary capacity. Living trusts, as opposed to testamentary (will) trusts, may help a trustor avoid probate. In England and Wales, a disclaimer is likewise irrevocable and covers the entire testamentary gift. Graduated tax rates for testamentary trusts were also eliminated. He was also the author of a large work on "Fidei commissa" (Testamentary Trusts). No inheritance tax was recorded for the Roman Republic, despite abundant evidence for testamentary law. A Henson trust can be established as either a living trust, or a testamentary trust. This unique testamentary trust became known as 'The Sarawak Sovereignty Trust'. The Holland regents did not feel bound by a testamentary provision. An immense space in the Corpus juris is occupied with testamentary law. Durden was also Chairman of the Alfred I. duPont Testamentary Trust since 2005. He was immediately given legal work as part of a committee on a testamentary issue. He was also a referee in testamentary appraisals. Support and guidance are available on assessing testamentary capacity in people with dementia. An insane delusion is distinct from testamentary capacity.