John Ker, 1st Duke of Roxburghe, KG, PC, FRS was a British politician.
John Ker, 1st Duke of Roxburghe
Robert Ker, 2nd Duke of Roxburghe was a Scottish peer.
John Ker, 1st Duke of Roxburghe
…Together, John and Mary were the parents of: Robert Ker (c. 1709–1755), who married his half-cousin Essex Mostyn, eldest daughter of Sir Roger Mostyn, 3rd Baronet and Lady Essex Finch (half sister of Lady…
A portrait of Lord Roxburghe
Ker's sons John and Robert