Is the origin of your first name...

[Ülev]

it's so very Germanic that is not in english version of wikipedia: https://de.wikipedia.org/wiki/Waldemar

[black hole]

Old Norse Scandinavian

[black hole]

My name means "sacred", "saint", "holy"

[Mikula]

My firstname is of Latin origin

[Whiskey]

Roman/Biblic/Greek .

[Root]

Persian.

[Light]

Roman/Biblic/Greek .

Cornelius?

[Pahli]

Iranic > Kurdish

[The Blade]

My case is funny:
First name - Nordic form of ancient Latin/Roman name
Middle name - appears to be a Portuguese/Spanish variant of ancient Visigothic name
Surname derivation - Greek

[Mikula]

My firstname is of Latin origin

...and lastname is derivated from a firstname of Greek origin