The relationship with the father is depicted on the Patrilineal Kinship Chart. Something patrilineal is related to your father or your family's line of male descendants — for example, your father, his father, his father's father, and so on. A genetic condition that spreads patrilineally may be passed down from your grandfather to your father and finally to you. Patrilineal descent, also known as agnatic descent, is established by tracing descent solely through males from a founding male ancestor. The individuals shown in the Patrilineal Kinship Chart are patrilineal descendants of a common ancestor. Agnatic is another term for it.