ベザリウス - Vessalius
ナイトレイ - Nightray
リーオ - Reo
レインズワース - Lainsworth
レイム - Reim
アヴィスの意志 - The Will of the Abyss
サブリエ - Sablier

I know in my notes I've also used "Sabrie" and in other translations "Vesalius" is used, as is "Nightlay", "Leo" and "Rainsworth". "Reim" was confirmed by the chapter "Lily and Reim" but some translations still use "Liam" and "Will of the Abyss" has been "The Intention of the Abyss" as well.