According to mid-19th century historian Henry Harvey, the Shawnee were ruled by kings, whom they called "sachema" sachems, who reigned by succession in the matrilineal line. For instance, the children of a king would not inherit the position. The sons of his brother, by the mother, or the sons of his sister (and after them, the sons of her daughter) would reign. Women did not inherit such a position directly. Harvey suggested that the Shawnee relied on this system of descent because a woman's sons would always be considered legitimate.