This section is from the book "Real Property, An Introductory Explanation Of The Law Relating To Land", by Alfred F Topham. Also available from Amazon: The New Law Of Property.
If the appointor appoints the land to some person who is an object of the power, but for the purpose of benefiting himself or with some other ulterior purpose, not for the benefit of the object of the power, the appointment can be set aside as a fraud on the power.
Hinchinbrooke v. Seymour (1781), 1 B. C. C. 394. S had a special power of appointment among his children over a sum of £10,000; he had one son and one daughter, and
(h) It should be remembered that in other cases the facts to which the period is applied are the facts which might happen, regarding them from the date when the instrument which creates the gift takes effect.
he appointed the whole fund to his daughter aged 14, who was in consumption. The daughter died the next year so that the father (S) got the whole fund himself as her next-of-kin. Held, the appointment was void (f).