Where does “Jarra” come from?

Jarra (English) comes from English Jarrow, from Middle English Jarwe, from Old English Gyrwum, from Old English ġyru, from Proto-Germanic gurwijō, from Proto-Indo-European gʷʰer-, from Proto-Indo-European gʷʰe-gʷʰór-e ~ gʷʰe-gʷʰr-ḗr.

Ancestry of “Jarra”, step by step

Step	Language	Word	Meaning
1	English	Jarrow	located on the River Tyne OS grid ref NZ3265
2	Middle English	Jarwe	—
3	Old English	Gyrwum	—
4	Old English	ġyru	mud; marsh
5	Proto-Germanic	gurwijō	mud
6	Proto-Indo-European	gʷʰer-	warm, hot
7	Proto-Indo-European	gʷʰe-gʷʰór-e ~ gʷʰe-gʷʰr-ḗr	—

Every word from Proto-Indo-European gʷʰe-gʷʰór-e ~ gʷʰe-gʷʰr-ḗr →Every word from Proto-Indo-European gʷʰer- →Every word from Proto-Germanic gurwijō →