Peerage of England
The ranks of the English peerage are, in descending order, Duke, Marquess, Earl, Viscount, and Baron. While most newer English peerages descend only in the male line, many of the older ones (particularly older baronies) can descend through females. Under English inheritance law all daughters are co-heirs, so many older English peerage titles have fallen into abeyance between various female co-heirs.
Earl Marshal
In the general order of precedence, the Earl Marshal is currently the highest hereditary position in the United Kingdom outside the Royal Family. Although other state and ecclesiastical officers rank above in precedence, they are not hereditary. The exception is the office of Lord Great Chamberlain, which is notionally higher than Earl Marshal and also hereditary, but as it is currently held by a marquess (Marquess of Cholmondeley), is consequently lower in the general order of precedence. The holding of the Earl Marshalship secures the Duke of Norfolk's traditional position as the "first peer" of the land, above all other dukes.