| Lady Mary Kerr Close Associate | elder sister · sibling | - | - | |
| Lady Cecil Kerr Close Associate | elder sister · sibling | - | - | |
| Peter Kerr, 12th Marquess of Lothian Politician | father | - | - | |
| Elizabeth Scott, Duchess of Buccleuch Close Associate | sibling · younger sister | - | - | |
| Lady Louise FitzRoy Close Associate | child | - | - | |
| Lady Isobel FitzRoy Close Associate | child | - | - | |
| James FitzRoy, Earl of Euston Close Associate | spouse | | | |
| Ralph Kerr, 14th Marquess of Lothian Close Associate | sibling · younger brother | - | - | |
| Lady Emily FitzRoy Close Associate | child | - | - | |
| Antonella Kerr, Marchioness of Lothian Close Associate | mother | - | - | |
| Lady Charlotte FitzRoy Close Associate | child | - | - | |