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Can a family member witness a will?
The witnesses on your will should be independent witnesses. The characteristics of an independent witness are that he/she:
Is fourteen (14) years or older;
Is mentally capable of providing testimony in court, at the time of signing;
Is not specified in the will (for example as executor, trustee, heir, legatee or trustee);
Is not the spouse of anyone who has been specified in the will (the testator/testatrix, executor, trustee, heir, legatee, or beneficiary([ies]).
Therefore, if your family member is neither specified in the will nor is married to anyone specified in the will, then he/she may act as a witness on your will.