List of courtesy titles in the peerages of Britain and Ireland

Columns: Peer | Son | Grandson | Great-grandson
The Duke of Norfolk | Earl of Arundel * | Lord Maltravers | The Duke of Somerset | Lord Seymour* | The Duke of Richmond , Lennox and Gordon | Earl of March and Kinrara * | Lord Settrington | The Duke of Grafton | Earl of Euston* | Viscount Ipswich | The Duke of Beaufort | Marquess of Worcester* | Earl of Glamorgan | Viscount Grosmont | The Duke of St Albans | Earl of Burford* | Lord Vere* | The Duke of Bedford | Marquess of Tavistock* | Lord Howland

Example questions:
What is the seat of the peer in the peerages of Britain and Ireland whose son holds the oldest extant title in English peerage ? | Who is the grandfather of the man with the title in the peerages of Britain and Ireland created in 1664 ? | Who created the title in the peerages of Britain and Ireland of the peer whose grandson is Viscount Ipswich ? | Who was the first person to hold the title in the peerages of Britain and Ireland of the peer whose great grandson is Viscount Dundaff ? | How many times has the title in the peerages of Britain and Ireland of the peer whose grandson is Lord Howland been created ?

Answers:
Arundel Castle | Duke of Devonshire | Charles II | David Lindsay | Six