Thank you for the article! That was very interesting and informative reading.
I've always assumed that Corvo belongs to a very high nobility because of his "Lord Protector" title. After all, in history of England this title was used for nobles exercising regency while the monarch was unable to rule (e.g., too young). I assume, in normal circumstances if the Empress was absent or dead, Corvo would become the Regent until Emily is old enough to rule (and he takes this position in the good ending of the game). In this case he is not just Lord Protector of the Empress or the royal family, but he is the Lord Protector of the State.
That would also explain why Corvo was sent to the diplomatic mission of critical importance. There is no sense in sending personal bodyguard or even head of the royal guards, no matter how much he is trusted by the Empress, - in fact, it could be even treated as offense by foreign governments. But if the second important man in the state presents his country while trying to gain some favors - that would add a lot of weight to his words. That's why the Empress had to send Corvo, though very reluctantly, judging by her letter.
I've always assumed that Corvo belongs to a very high nobility because of his "Lord Protector" title. After all, in history of England this title was used for nobles exercising regency while the monarch was unable to rule (e.g., too young). I assume, in normal circumstances if the Empress was absent or dead, Corvo would become the Regent until Emily is old enough to rule (and he takes this position in the good ending of the game). In this case he is not just Lord Protector of the Empress or the royal family, but he is the Lord Protector of the State.
That would also explain why Corvo was sent to the diplomatic mission of critical importance. There is no sense in sending personal bodyguard or even head of the royal guards, no matter how much he is trusted by the Empress, - in fact, it could be even treated as offense by foreign governments. But if the second important man in the state presents his country while trying to gain some favors - that would add a lot of weight to his words. That's why the Empress had to send Corvo, though very reluctantly, judging by her letter.