Where does “Ginsterkatze” come from?

Ginsterkatze (German) comes from German katze, from Middle High German katze, from Old High German kazza, from Old High German katta, from Proto-Celtic kattā, from Proto-Germanic *kattǭ, from Latin catta, from Latin cattus — a cat.

Ancestry of “Ginsterkatze”, step by step

Ginsterkatze traces back through two separate lines of ancestry.

via German katze

Step	Language	Word	Meaning
1	German	katze	house cat, Felis silvestris catus
2	Middle High German	katze	cat
3	Old High German	kazza	cat
4	Old High German	katta	—
5	Proto-Celtic	kattā	cat
6	Proto-Germanic	*kattǭ	female cat
7	Latin	catta	a cat
8	Latin	cattus	a cat

via German Ginster

Step	Language	Word	Meaning
1	German	Ginster	broom shrub, especially
2	Old High German	genesta	—
3	Latin	genista	Alternative form of genesta
4	Latin	genesta	broom
5	Proto-Indo-European	gwₑnestā	—

Every word from Latin cattus →Every word from Latin catta →Every word from Proto-Germanic *kattǭ →