A. What is the nature of property of your father? whether it is self acquired or ancestral or joint family property?
B. Once the Gift Deed executed by legal manner that cannot be cancelled except decree of the court.
C. Your sister and brother objection is depending upon the nature of property, i.e, ancestral or joint family property.
D. Probate will be applicable in the Will cases, not Gift Deed.
E. The third party can be protected under the bona fide purchaser without knowing the material facts subject to the establishment of non awareness of the claims and facts.
F. Gift deed can be set aside on grounds of undue influence and fraud, Period of limitation of 3 years. Therefore, after 3 years, it is barred by law of limitation.
G. Time from which period begins to run: When the facts entitling the Plaintiff to have the instrument ( Gift Deed) or decree cancelling or set aside or the contract rescinded first become known to him ( Article 59 of Law of Limitation).