Where does “Heiloo” come from?

Heiloo (English) comes from Dutch Heiloo, from Swedish helig, from Old Swedish hēlagher, from Old Norse heilagr, from Proto-Germanic hailagaz, from Proto-Germanic hailaz, from Proto-Indo-European *kéh₂ilos — healthy.

Ancestry of “Heiloo”, step by step

Step	Language	Word	Meaning
1	Dutch	Heiloo	—
2	Swedish	helig	holy
3	Old Swedish	hēlagher	holy, sacred
4	Old Norse	heilagr	holy; inviolable, sacred
5	Proto-Germanic	hailagaz	holy, sacred
6	Proto-Germanic	hailaz	whole, unbroken, intact; entire, complete; hale,...
7	Proto-Indo-European	*kéh₂ilos	healthy

Every word from Proto-Indo-European *kéh₂ilos →Every word from Proto-Germanic hailaz →Every word from Proto-Germanic hailagaz →