The meaning of Gaius' name did not suit his personality- Merlin knew this, Arthur knew this, Morgana knew this, the door knew this… everyone in Camelot knew Gaius' name didn't suit him.
Of course, Gaius thought it suited him.
This lead to Merlin fainting. Now, we all know that Gaius is a pessimist? We all agree that Gaius is a pessimist? Notion noted and passed.
Gaius' name meant happy, rejoice and was the root word of the word 'Gay'. (Not that gay, gay as in happy!)
It did not suit the grumpy physician.
But, then again, as Uther reminded them in one of his rare nice moments, they hadn't known Gaius when he was younger…
I decided we needed a happier one… Review?