Is a woman who breastfed a man in his infancy considered a grandmother, and are her children considered uncles?

If it is confirmed that the woman breastfed your father five known feedings while he was within the first two years of life, then she is considered your grandmother through breastfeeding (rada'a), and her children are your paternal uncles through breastfeeding. The reference for defining a feeding is custom ('urf), whereby a single feeding is when the child voluntarily detaches from suckling.