Re: 2012 Adventure Calendar
Interestingly they don't mention that Strax died at the battle of Demon's Run in his bio there, so we still can't place where or when he's from in the Christmas special - pre-Demon's Run, or perhaps he didn't actually die. I certainly didn't get the impression from the episode that he'd previously known Vastra & Jenny.
Shorts in: SNW5 | SNW7 | SNW9
+ Star Trek: Corps of Engineers - "The Light"
+ Full Throttle Space Tales #3: Space Grunts - "Rush"