Courtesy of Paul Lydiate

My Lord,

I was indeed flattered that you should consult me on the matter of the terms of address in current useage at court. In order of precedence, they are:

THE KING
Style: His Most Christian Majesty Louis the Fourteenth by the Grace of God, of the Kingdom of France and of His other Realms and Territories, King.
Addressed as: Your Majesty

THE QUEEN
Style: Her Most Christian Majesty Natasha by the Grace of God, of the Kingdom of France and of His Majesty's other Realms and Territories, Queen.
Addressed as: Your Majesty

THE DAUPHIN
Style: His Royal Highness Prince Frederick le Dauphin
Addressed as: Your Royal Highness

LA DAUPHINE (His wife)
Style: Her Royal Highness La Princesse Sophie, Duchesse d'Orleans
Addressed as: Madame or, more formally, May it please your Royal Highness

THE CROWN PRINCESS
Style: Her Royal Highness La Princesse Louisa, Duchesse de Zer
Addressed as: Your Royal Highness

CARDINAL
Style: His Eminence Cardinal Ximenez
Addressed as: Your Eminence

THE MINISTER OF STATE
Style: His Excellency (Noble title and Name), His Majesty's Minister of State
Addressed as: Your Excellency

THE MINISTER OF WAR
Style: His Excellency (Noble title and Name), His Majesty's Minister of War
Addressed as: Your Excellency

AMBASSADORS OF FOREIGN STATES
Style: His Excellency (Noble title and Name), Ambassador of the Court of (Sovereign's Name and style) of (Foreign State)
Addressed as: Your Excellency

DUCS, ACCORDING TO THEIR PATENTS OF CREATION
Style: His Grace le Duc de (Name)
Addressed as: My Lord Duc or Your Grace

THE MINISTER OF FOREIGN AFFAIRS
Style: His Excellency (Noble title and Name), His Majesty's Minister of Foreign Affairs
Addressed as: Your Excellency

MARQUISES, ACCORDING TO THEIR PATENTS OF CREATION
Style: The Most Honourable Le Marquis de (Name)
Addressed as: My Lord Marquis

MINISTER OF FINANCE & THE MARINE
Style: His Excellency (Noble title and Name), His Majesty's Minister of Finance
Addressed as: Your Excellency

MINISTER OF THE KING'S CLOSET
The Most Honourable (Name and Noble title), Master of His Majesty's Wardrobe
Addressed according to Noble title

COMTES, ACCORDING TO THEIR PATENTS OF CREATION
Style: The Right Honourable le Comte de (Name)
Addressed as: My Lord

VICOMTES, ACCORDING TO THEIR PATENTS OF CREATION
Style: The Right Honourable le Vicomte de (Name)
Addressed as: My Lord

BARONS ACCORDING TO THEIR PATENTS OF CREATION
Style: The Right Honourable le Baron de (Name)
Addressed as: My Lord

LIEUTENANT-GENERAL DE POLICE (termed by the vulgar 'Commissioner of Public Safety') IF OF THE DEGREE OF A CHEVALIER
Style: (Noble title and Name), His Majesty's Lieutenant-General de Police
Addressed as per title

CHEVALIERS
Style: Chevalier (First and Family Names)
Addressed as: Chevalier (First Name)

[Note: Military officers holding noble ranks are styled (military rank) le (title/Name)(Regiment/Command) as in 'General le Marquis de Sade, Officer Commanding the First Army' or 'Captain le Chevalier Armand d'Aleg, Dragoon Guards'. In a military context they are addressed by military rank, as in 'Maréchal de Sade' or 'Captain d'Aleg, otherwise as per their title. Officers are addressed at their brevet rank (if they have one) rather than at their full rank. At Court, precedence is assigned as per their noble title rather than by military rank.]

NAVAL, MILITARY AND OTHER ESQUIRES BY OFFICE, AS FOLLOWS (OFFICERS HOLDING MILITARY APPOINTMENTS ARE GIVEN PRECEDENCE OVER THOSE OF THE SAME RANK WITHOUT APPOINTMENTS. OFFICERS OF THE SAME RANK HOLDING THE SAME APPOINTMENT ARE GIVEN PRECEDENCE ACCORDING TO THE DATE OF THE APPOINTMENT.):

GENERALS
Style: General (First and Family Names)
Addressed as: General (Family Name)

LIEUTENANT-GENERALS
Style: Lieutenat-General (First and Family Names)
Addressed as: Lieutenant-General (Family Name)

BRIGADIER-GENERALS
Style: Brigadier-General (First and Family Names)
Addressed as: Brigadier (Family Name)

COLONELS
Style: Colonel (First and Family Names), Officer Commanding (Regiment)
Addressed as: Colonel (Family Name)

LT.COLONELS
Style: Lt,Colonel (First and Family Names), (Regiment)
Addressed as: Lt.Colonel (Family Name)

MAJORS
Style: Major (First and Family Names), (Regiment)
Addressed as: Major (Family Name)

CAPTAINS,
Style: Captain (First and Family Names) (Regiment)
Addressed as: Captain (Family Name)

SUBALTERNS
Style: Subaltern (First and Family Names), (Regiment)
Addressed as: Subaltern (Family Name)

OTHER ESQUIRES
Style: Monsieur (First and Family Names)
Addressed as: Monsieur (Family Name)

The above is a (necessarily much abbreviated) section from my book _Modern Manners at the Court of His Majesty King Louis_ which is published by M.de Fer and available for purchase at the sign of the Sphere Royale, Quai de l'Orloge on the Isle du Palais. Should any of your subordinates wish to delve more deeply into this complex subject, please feel free to recommend this volume to them.

Your Most Obedient Servant,

Comte Emptius de Staigne,
Personal Private Secretary to His Royal Highness Prince Fred le Dauphin