From Schwarzenegg + -er, literally “someone from Schwarzenegg”, referring to either of two places in Switzerland and Austria, from schwarz (“black”) + Egg (“ridge”), cognate with Ecke.
I feel like I'm watching a Community dream sequence (with Ayoade as guest star) in which Jeff Winger has to take a computer class to graduate, so he's freaking out.
Google says:
From Schwarzenegg + -er, literally “someone from Schwarzenegg”, referring to either of two places in Switzerland and Austria, from schwarz (“black”) + Egg (“ridge”), cognate with Ecke.