Where does “Halmaghi” come from?

Halmaghi (Romanian) comes from Hungarian Halmágy, from Hungarian halom, from Proto-Slavic xъlmъ, from Proto-Germanic hulmaz, from Proto-Indo-European kl̥Hmos, from Proto-Indo-European ḱelH- — to freeze.

Ancestry of “Halmaghi”, step by step

Step	Language	Word	Meaning
1	Hungarian	Halmágy	—
2	Hungarian	halom	heap, pile
3	Proto-Slavic	xъlmъ	hill
4	Proto-Germanic	hulmaz	small island, hill, mound
5	Proto-Indo-European	kl̥Hmos	—
6	Proto-Indo-European	ḱelH-	to freeze

Every word from Proto-Indo-European ḱelH- →Every word from Proto-Indo-European kl̥Hmos →Every word from Proto-Germanic hulmaz →