Where does “Ghertenișan” come from?

Ghertenișan (Romanian) comes from Romanian Gherteniș, from Hungarian Gyertyámos, from Hungarian gyertyán, from Hungarian gyertya, from Chuvash ҫурта, from Proto-Turkic *yārtu — something split off.

Ancestry of “Ghertenișan”, step by step

Step	Language	Word	Meaning
1	Romanian	Gherteniș	—
2	Hungarian	Gyertyámos	—
3	Hungarian	gyertyán	hornbeam a tree of the genus
4	Hungarian	gyertya	candle; shoulder stand; spark plug
5	Chuvash	ҫурта	candle
6	Proto-Turkic	*yārtu	something split off

Every word from Proto-Turkic *yārtu →Every word from Chuvash ҫурта →Every word from Hungarian gyertya →