Boyce v Boyce (1849) 16 Sim 476 In this case, a testator devised his houses in Southwold to trustees on trust for his widow for life and after her death in trust to convey to his daughter Maria one of the houses, whichever she [i.e. Maria] should choose, and to convey ‘all my other houses’ to his daughter Charlotte. Maria died in the testator’s lifetime and so could not choose any particular house. Consequently the trust in favour of Charlotte was void as it was uncertain what property the trust applied to.