
The male line of Robert's successors, surnamed Albini, came to an end in 1247 and Belvoir passed into the family of de Ros; the heiress of the last Albini having married Robert de Ros. Eleanor, sister and heiress of Edmund Lord Ros, married Sir Robert de Manners XI, of Ethall, in Northumberland, thus bringing Belvoir to the Manners family where it has remained ever since.
Eleanor and Robert's son, Sir George Manners, inherited the Castle and received the honour of a knighthood. His son Sir Thomas Manners succeeded George on his death in 1523 and was created 1st Earl of Rutland by Henry VIII on June 18th 1525. A title which had previously belonged to Edmund, younger brother to Edward IV, and never before conferred upon anyone not of Royal blood.
The arms granted alluded to that Royal connection - the fleur de lys and lion of England. There were nine Earls - the 9th receiving the title of 1st Duke of Rutland and Marquis of Granby in 1703. The second title, traditionally, being passed to the eldest son. Our present Duke, David Manners, is the 11th Duke of Rutland and his son, Charles, is now the Marquis of Granby.