User blog comment:Master Sima Yi/Assassinews 03-12-'14 — New Assassin's Creed in Victorian London leaked/@comment-24760042-20141208191821/@comment-5019018-20141208221101

No it's not. Working for Charles would imply that Shay took orders directly from him, and I'm pretty sure he didn't. I have no idea what Shay was doing when Charles took control, but he couldn't have been in the colonies.