How granddaughter get father's property given by father grand father

Hi, My grand father divided his property to his children including my father but as he is no in village, never signed the documents till his death. Both my father and grand father was no more. How can i receive the property as there is no record with me, Both my aunties are staying in the same property divided and given to them by my grandpa, each side of their properties is the boundaries of my father's property. But how can i prove it without any document in my hand. Is there any way. waiting for ur valid reply