Sir Pierre Baldwin was about Arthur's age when he died. But the similarities ended there.

Where Arthur had strait blond hair, Baldwin had curly, black as night hair. Where Arthur had bright, happy sapphire blue eyes, Baldwin had dark, malicious charcoal eyes that were bloodshot, like a river of blood had created a delta in both of his eyes. Where Arthur had stood tall with authority, Baldwin slouched over, making his figure seem even shorter than it already was.

When he received the message that the queen was dead, and, since she had no heir, he was now the official king Camelot, the most powerful of the five kingdoms, he smiled evilly at the thought of all that power. He set of for his kingdom with his finest horse and most impressive clothes immediately. He was king.

(King) Pierre decided that his first decree as the new king of Camelot was to follow in the footsteps of his uncle, Uther Pendragon. Because, when you think about it, he had lost all if not most of his family to magic.

Uther, died of magic caused wounds. Age 51.

Arthur, died in the war fighting against magic, from a wound from a blade infused with magic. Age 28.

His mum, Jaylie, died in a Druid massacre from a killing curse. Age 37.

All of his brothers, John, Hanther, Porter, and Keating, died in the same war as Arthur, fighting bravely against the crime we all know as magic as knights for Camelot. Ages 15,18, 21, and 23.

His sister, Jallieh, died from a curse cast from a pixie. Age 9.

His dad, Pruetter (Uther's brother), died from magic inflicted wounds trying to protect his only daughter from dying. Age 39.

Pierre had many problems with magic. Anyone accused of so much of thinking of magic would have either A) Have their head cut off, B) Be burnt at stake, C) Hanged, or D) Have their hearts dug out of their chests with a ceremonial dagger. 

So, basically, magic's a big no-no.

As Pierre sat upon his throne for the very first time, he called for the head knights, which just happened to be Sir Leon and Sir Percival, to introduced him to his slav- er, servants, so he knew just who to call for each little problem.

After about an hour, Leon finally came to Merlin, now court physician, to introduced to King Pierre.

Sir Leon knocked on Merlin's door. 

"Come on in!" Merlin called from inside his study.

The knight opened the door to walk into a disheveled room, with countless herbs and "not magical" plants dangling from the ceiling. The tables were completely covered in books (for both medical amd magical purposes), different prescriptions and medicines and cures for various diseases, except for one, which had dried up blood stains on it and scraps and scratches from Merlin curing his patients that had external wounds.

"Merlin?" Leon yelled into the cluttered dwelling.

"I'm over here!" the busy physician shouted from across the room, if you could even call it that, pushing away a stack of books the were obscuring his location beforehand. "Oh, Leon! Did you get hurt in battle again? Have you been taking your belladonna and ricers?"

"No, Merlin, it's the king-" he would of finished his sentence, but Merlin, still being Merlin, jumped to conclusions thinking the king was hurt and interrupted Leon.

"The king?!?" Merlin exclaimed, shaking the knight. "Why didn't you come to me at once?!? How did he get hurt?! Or is he ill? What are his symptoms? Tell me, Leon, Tell me!"

"I would've told you, if you let me finished!" Sir Leon told him. "The king wants to meet you. That's it. Nothing more."

"Oh... I knew that," Merlin said, clearly embarrassed. 

Leon muttered something under his breathe that Merlin couldn't quite make out.

"I'm sorry, what was that?" Merlin asked teasingly.

"I said clotpole," Leon said, smiling. 

I give you two hints: 1) He didn't say clotpole.  2) He said sorcerer.