Rightful earnings for ancestors property

Your query is not very clear.  From what I understood, the property appears to be ancestral in nature out of which your father was denied his legitimate share(?), What is your father's opinion about this now?, however, you as a lineal descendant can claim a legitimate share rightfully out of the share of your father in the ancestral property, file a partition suit seeking your share and separate possession.

If you are hindus by religion, yes you can file a partition suit against your father, aunts and your grand father to partition the property by metes and bounds, separate possession.  Untill the main case pending, you can also pray the court to pass interim injunction order restraining the defendants from alienating the property and to deposit the rents if any they are collecting.