Primogeniture is a right to inheritance of a firstborn son to have all the properties of his parents. This became a part of the story in Sense and Sensibility.
John inherited the house of his father, Henry Dashwood. Before Henry died, John was told to take care of his sisters who were living in the house. However, despite his promise to his father his wife Fanny persuade him to unkept that promise.
John and his wife occupied the house. They treated the second family who formerly lived in the house as outcasts. This treatment made the second wife of Henry to leave their house with her daughters.
