Where does “Կիրակոս” come from?

Կիրակոս (Armenian) comes from Old Armenian Կիրակոս, from Byzantine Greek Κυριάκος, from Ancient Greek κύριος, from Ancient Greek κῦρος, from Proto-Indo-European ḱuh₁-ró-s, from Proto-Indo-European ḱewh₁- — to swell; to be strong.