User blog comment:B214/Volume 21 info & spoilers/@comment-73.160.58.215-20160327154610/@comment-73.160.58.215-20160327161317

Gah, ShadowDragon again. Was just randomly checking Elmenhilde's name and found that her last name ISN'T Galnstein. It's Karnstein, and comes from one of the vampire Carmilla's aliases "the Countess Karnstein" (see https://en.wikipedia.org/wiki/Carmilla).