[SPOILER ALERT: Details below from Downton Abbey Season 3 + Ep. 1, Season 4.] In a post last year, I explained The Entail, Primogeniture, and Why Matthew Inherits Downton Abbey. But the intricacies of noble (and royal) inheritance never end, and Downton Abbey’s fourth season raised new questions. During Season 3, Matthew invested some money in Downton Abbey, and in exchange, Lord Robert gave him half ownership. So what happens to Matthew’s half interest now that he’s dead?