Marrying a paternal second cousin whose wife was his grandfather's former wife
It is permissible for you to
marry any of the daughters of your father's cousin whose mother was your grandfather's ex-wife if she did not breastfeed you when you were an infant as she is a non-Mahram (not a spouse or an unmarriageable relative). It is permissible for you to marry any of her daughters except those she begot by your grandfather. May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.