| Lady Margaret Hay | |
| More: | no |
| Spouse: | Sir Alan Philip Hay |
| Noble Family: | House of Seymour |
| Father: | Lord Henry Seymour |
| Mother: | Lady Helen Grosvenor |
| Birth Name: | Margaret Katherine Seymour |
| Birth Date: | 9 May 1918 |
| Birth Place: | Paddington, London |
| Death Place: | Chester, Cheshire |
| Occupation: | Nurse, courtier |
| Website: | | module = } |