This same form is used in addressing communications to all other members of the Royal Family, adding the title where the word “Prince” or “Princess” would be incorrect, as:—
To His Royal Highness the Duke of York.
To Her Royal Highness the Duchess of York.
Below the rank of royalty there is the distinction between letters addressed by persons on an equality with those to whom formal and they write, and by inferiors.
Address for the envelope—formal and informal.
I shall call them formal and informal, and range them in separate lines.
| Informal. | Formal. |
| The Duke of —— | To His Grace the Duke of —— |
| The Duchess of —— | To Her Grace the Duchess of —— |
| The Marquis of —— | To the Most Honourable the Marquis of —— |
| The Marchioness of —— | To the Most Honourable the Marchioness of —— |
| The Earl of —— | To the Right Honourable the Earl of —— |
| The Countess of —— | To the Right Honourable the Countess of —— |
| The Viscount —— | The Right Honourable the Viscount —— |
| The Viscountess —— | The Right Honourable the Viscountess —— |
| Lord —— | The Right Honourable Lord —— or Baron —— |
| Lady —— | The Right Honourable Lady —— or Baroness—— |
Addressing Privy Councillors.
Members of the Privy Council are also addressed as “Right Honourable,” in the same way as Peers. In this case the names of commoners are not followed by the abbreviation “Esq.,” as:—
The Right Honourable James Balfour, M.P.