Stormblood pretty much confirms Gaius von Baelsar is alive with the ending.

Gosetsu had a castle dropped on him and then the castle blew up. No body was found. Survived and went fishing.

Gaius had a castrum dropped on him and then the castrum blew up. No body was found. Survived and probably went fishing too.

Lore book is a lie. #BlackWolfLives


For real though, the thing I was actually curious about was if there is any speculation as to Elidibus' face. He takes off his mask and reveals himself to Varis who seems shocked and appears to recognize the man behind the mask.

Who could it be that Varis would know and be shocked to see? (I'm just saying, Gaius fits the bill here as well) Or, I suppose, whose body is Elidibus bodysurfing in, ala Thancred and Lahabrea.