Where does “Johor” come from?

Johor derives from Malay Johor, from Arabic جَوْهَر, from Persian گوهر, from Old Persian gauθra-.

Ancestry of “Johor”, step by step

Step	Language	Word	Meaning
1	Malay	Johor	—
2	Arabic	جَوْهَر	gem, jewel; jewel, pearl; jewels
3	Persian	گوهر	jewel; gem; pearl
4	Middle Persian	gwhl	substance, essence, nature; jewel; stock, lineage
5	Old Persian	gauθra	—

Johor — Etymology, Origin & Word History | Etymology Explorer