How is [x] used in medieval German?

[Anton]

2) "pox" as a minced form of Gotts

Koen, "pox" is not a minced form of Gotts. It is a minced form of "bocks". "Bocks" transgressing into "pox" is a linguistic phenomenon.  Pox being used as an euphemism for Gotts is, I believe, a cultural one.

Extrem unterschiedliche Schwurformeln werden so zum historischen Anwendungsfall des Prinzips, wie
es Hughes an einem extremen Beispiel demonstriert: “‘For Christ’s sake!’ might, in other
company, transform to ‘For pity’s sake!’, ‘For shit’s sake!’ or even ‘For fuck’s sake!’. This series
might provoke the obvious (but naive) question, ‘What do Christ, pity, shit and fuck have in
common?’ The answer, in this context, is of course, ‘Nothing whatever. They are simply terms of
high emotional charge which have acreted over time into the formula to the point that they can
now be used interchangeably.’”

I don't think the template is always like "may pox something cause you harm". There are plenty of examples here, section 4.1.4:

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