Where does “Herculian” come from?

Herculian (English) comes from English Hercules, from Latin Herculēs, from Etruscan 𐌇𐌄𐌓𐌂𐌋𐌄, from Ancient Greek Ἡρακλῆς, from Ancient Greek -κλῆς, from Ancient Greek -κλέης, from Ancient Greek κλέος, from Proto-Hellenic kléwos — to cover; to incline.

Ancestry of “Herculian”, step by step

StepLanguageWordMeaning
1EnglishHerculesThe Roman name for the Greek divine hero Heracles, who was the son of Jupiter and Alcmene, a celebrated hero who possessed exceptional strength. Most famous for his twelve labours performed to redeem himself after killing his family
2LatinHerculēsHercules, Heracles, heroic son of Zeus
3Etruscan𐌇𐌄𐌓𐌂𐌋𐌄
4Ancient GreekἩρακλῆςHeracles
5Ancient Greek-κλῆςAn element found in given names
6Ancient Greek-κλέης
7Ancient Greekκλέοςrumour, report; good report, fame, glory; bad...
8Proto-Hellenickléwosfame
9Proto-Indo-Europeanḱléwosfame
10Proto-Indo-Europeanḱlew-to hear
11Proto-Indo-Europeanḱel-to cover; to incline
Every word from Proto-Indo-European ḱel-Every word from Proto-Indo-European ḱlew-Every word from Proto-Indo-European ḱléwos