A son has received a legal notice from his elder sister claiming an equal share of their father's ancestral property, stating the father died intestate. However, the son claims his father left an unregistered Will favouring him and other siblings with specific monetary and jewellery bequests. The core issue is the validity of the unregistered Will versus the legal heirs' entitlement under intestate succession laws. The son is seeking advice on how to defend his claim to the ancestral home, especially given the witnesses to the Will are deceased.