His
grandfather’s daughter is also his paternal uncle’s wife
Question

                Am I classified as a Muhram for the wife of
      my uncle after being divorced ( she is originally my grand father daughter ) .Jazaka
      Allahu Khira.
Praise be to Allah.Your grandfather’s daughter must necessarily be your
    maternal aunt (khaalah) or paternal aunt (‘ammah). If she is the daughter of your
    father’s father, she is your paternal aunt, and if she is the daughter of your
    mother’s father, then she is your maternal aunt. If she is your aunt, whether the
    sister of your father or the sister of your mother, then you are a mahram for her,
    regardless of whether she is married to your uncle or not. It seems from the question that
    she is the daughter of your maternal grandfather (your mother’s father).