From the name of the active volcano in southwest Iceland
Old Norse hekla = 'cloak' (referring to the cloak of mist that hides its summit)
|Female ♀||Male ♂|
|#: count of main first name only|
|&: count of both main and additional first names|
| Name counts are approximate as statistics normally is not published
for names given to less than 3 or 5 persons per country.