Knight v. Knight (1840).

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Emma Patel

Group 5

LLB Law (Hons) - Level 3


It is a cardinal principle of the law of equity that a trust may only be valid, that is, enforceable by the beneficiaries against the trustee, if it has been created with certainty of intention, certainty of subject matter and certainty of objects which was defined in
Knight v. Knight (1840).  Along with the beneficiary principle, these three certainties represent the inherent attributes of a trust.  The requirement for certainty of intention (or certainty of words) ensures that the potential trustee of property is clearly placed under a duty to use the property in the way intended by the settlor or testator.  Such certainty exists where the words used by the settlor or testator reveal the imposition of a trust obligation on the intended trustee as distinct from an intention to transfer the property to that person absolutely.  It is what distinguishes a transfer by way of trust from a transfer by way of absolute gift, as in the case of Re Conolly [1910].  The second of the three certainties, certainty of subject matter, requires that both the property which is to be the subject matter of the trust and the extent of the intended equitable owners’ beneficial interests are certain, or at least capable of being rendered certain.  This will ensure that the trustee is aware of the precise scope of his or her duties under the trust.  Thirdly, there must be certainty of objects in order that the trustee should know in whose favour he or she must perform the trust, so identifying who may apply to the court should the trustee fail in this duty.  The precise requirements of certainty of objects vary for different kinds of trusts and powers but, in all cases, a settlor’s or testator’s failure to define their objects with sufficient certainty will mean that the property is held on resulting trust for the settlor or residuary legatees as in the McPhail v. Doulton [1971]  case.  This particular problem concerns various aspects of the ‘three certainties’, each limb of John’s testamentary provisions will be considered in turn.

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The first issue to be resolved is whether John has made an absolute gift in favour of Jane with a non-legally binding request that she uses the money to buy some small luxuries for herself and enable their children to have the best education or whether he has created a trust of which Jane is the trustee and his children beneficiaries.  This question depends on John’s intention in making the gift and whether he intended to impose a legally binding obligation on Jane.  In
Re Adams and the Kensington Vestry (1884) a testator gave property ‘unto and to the absolute use of ...

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