Where does “Versiebenfacher” come from?

Versiebenfacher (German) comes from German versiebenfachen, from German siebenfach, from German Sieben, from Middle High German siben, from Old High German sibun, from Proto-West Germanic *sibun, from Proto-Germanic sebun, from Proto-Germanic sebunt — seven.

Ancestry of “Versiebenfacher”, step by step

StepLanguageWordMeaning
1Germanversiebenfachento septuple, to septuplicate, to multiply by seven
2Germansiebenfachsevenfold
3GermanSiebenseven; gerund of sieben; the act of sifting;...
4Middle High Germansiben—
5Old High Germansibunseven
6Proto-West Germanic*sibun—
7Proto-Germanicsebunseven
8Proto-Germanicsebunt—
9Proto-Indo-Europeanseptḿ̥seven
Every word from Proto-Indo-European septḿ̥ →Every word from Proto-Germanic sebunt →Every word from Proto-Germanic sebun →