One of my uncles died leaving four daughters, a wife and a paternal aunt, then my father died two years after him. Before his death, my uncle bequeathed one third of his estate to me and my brother.
I hope Your Eminence will issue a Fatwa regarding this will.
If the case is as mentioned, your uncle's leaving you and your brother one third of his bequest is valid because you and your brother are not eligible for inheritance after his death as his brother, i.e. your father, was alive after your uncle died. May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.