A man who was breastfed by his grandfather’s second wife: may he marry the daughter of his third wife?

Question:
I am a young man, and I have a paternal grandfather who has three wives. One of them is my father’s mother, the second breastfed me four or five times, and the third gave birth to a daughter for my grandfather, who is my aunt, the sister of my father. This aunt got married and gave birth to a daughter. Is it permissible for me to marry this daughter, that is, my aunt’s daughter?

Answer:
If what you said is true, then she is the daughter of your sister through breastfeeding, provided that the breastfeeding from your grandfather’s wife is established. She becomes your brother’s daughter, your aunt’s daughter, and your maternal aunt’s daughter—if the breastfeeding is established—your grandfather’s wife breastfed you five times or more in the days you mentioned. You become your father’s brother, your aunt’s brother, and the maternal uncle of her children, both male and female. It is not permissible.