Posted this on Tumblr, so it's only hair it go here, too. : D
Because it came up in a conversation, and mixed with the 'Murderer's Row now being 'Grumpy Old Men: The Fanfic' now, I'm going to list all the ages of the characters I know of, both at the start of the fic and at where they'll be after the second timeskip. Some have been mentioned/implied in the fanfic, some haven't.
For dead characters, I've put in place of the timeskip their age at their death. So if you're not caught up, do not continue.
I've also included some reasoning for the ages, for those who weren't explicitly mentioned in the fic. (For example, Doc, York, O'Malley…)
I'v