All the duke I need

"he's a duchess in all but name ... Philippa Kirkpatrick has been raised at Carlyle Castle by her doting guardian, the Duchess of Carlyle. Preoccupied with the succession of the dukedom and the duke's health, the duchess has left the estate in Philippa's hands--and Philippa is determined not to let her down. He's not a duke at all ... The arrival of a new estate steward should be a relief, but instead it threatens to upend everything. William Mon...