| Code | DS/UK/1110 |
| Dates | 1890-1970 |
| Name | Sinclair; Sir; Archibald Henry Macdonald (1890-1970); fourth baronet of Ulbster, Caithness, and first Viscount Thurso; politician |
| Surname | Sinclair |
| Forenames | Archibald Henry Macdonald |
| PreTitle | Sir |
| Title | fourth baronet of Ulbster, Caithness, and first Viscount Thurso |
| Epithet | politician |
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