| Primary Title | Family Seat |
|---|
| The Marquess of Anglesey | Plas Newydd, Anglesey, Wales[1] |
| The Marquess of Milford Haven | |
| The Earl of Carnarvon | Highclere Castle, Hampshire, England[2] |
| The Earl Cawdor of Castlemartin in Pembroke | Cawdor Castle, Nairn, Scotland[3] |
| The Earl of Denbigh and Desmond | Newnham Paddox, Warwickshire, England[4] |
| The Earl Lloyd George of Dwyfor | Ffynone, near Newcastle Emlyn in Carmarthenshire, Wales[5] |
| The Earl of Pembroke and Montgomery | Wilton House, Wiltshire, England[6] |
| The Earl of Powis | Powis Castle, near Welshpool, Powys, Wales[7] |
| The Earl of Snowdon | |
| The Earl of Lisburne | Trawsgoed, near Aberystwyth, Ceredigion, Wales.[8] |
| The Viscount St Davids | |
| The Viscount Tredegar | Tredegar House, Monmouthshire, Wales[9] |
| The Baron Dynevor | Historically, from the 12th century until 1974, Newton House, Llandeilo |
| The Lord Glanusk | Dower House in Glanusk Park, Powys, Wales |
| The Williams-Bulkeley baronets | Baron Hill, Anglesey, Wales[10] |
| The Williams-Wynn baronets | Historically, until 1920, Bodelwyddan Castle, Denbighshire, Wales[11] |
| The Baron of Cymmer-yn-Edeirnion | Historically, until 16th century, Gwerclas Castle, later Pen-y-Clawdd near Chirk, Denbighshire, Wales | |
