The Duke's Children

The Duke's Children - The plot concerns the children of the Duke of Omnium, Plantagenet Palliser, and his late wife, Lady Glencora. When Lady Glencora dies unexpectedly, the Duke is left to deal with his grownup children, with whom he has a somewhat distant relationship. As the government in which he is Prime Minister has also fallen, the Duke is left bereft of both his beloved wife and his political position.
Book #6 (and the last book) of the Palliser series novels by Anthony Trollope.
Can You Forgive Her
Phineas Finn
The Eustace Diamond
Phineas Redux
The Prime Minister
The Duke's Children