My Grand father & grand mother died in 1961 & 1981 resp. leaving 5 sons & 4 daughters behind.
As on today one son and one daughter are alive.
Please guide me how to divide this property among us (i.e) grand sons,aunt and uncle.
If it was a self acquired property of your grandfather then it will devolve on all his legal heirs.
If the deceased legal heirs of your grandfather have left behind any legal heir upon their intestate death, then those legal heirs along with the surviving legal heirs shall be entitled to an equal share in the intestate property of your deceased grandfather.
Thus out of 5 sons and 4 daughters there are only one son and one daughter alive today, what about the other sons and daughters, whether they were married and have left their legal heirs behind.
If yes, then then the property can be divided into 9 shares and one son and one daughter alive now shall be entitled to one share equally and the legal heirs of respective deceased sons and daughters shall be entitled to one equal share.