Who can I appoint as my guardian in my Will?

Guardian must be above age 21 at the point of acting.

Your guardian can be anyone including your beneficiary / executor / trustee / witness / spouse / child. The only restriction here is that if your guardian is also your beneficiary or a spouse of your beneficiary, he/she MUST NOT be a witness to your will. The term "beneficiary" includes all beneficiaries, trust beneficiaries, remainder beneficiaries, and any substitutes for these beneficiaries in the Will.