Where does “Siċilja” come from?

Siċilja (Maltese) comes from Sicilian Sicilia, from Latin Sicilia, from Ancient Greek Σικελία, from Ancient Greek -ῐ́ᾱ, from Proto-Indo-European -íh₂, from Proto-Indo-European -h₂ — Creates collective nouns, which refer to groups...

Ancestry of “Siċilja”, step by step

Step	Language	Word	Meaning
1	Sicilian	Sicilia	—
2	Latin	Sicilia	—
3	Ancient Greek	Σικελία	—
4	Ancient Greek	-ῐ́ᾱ	{{l\|en\|-ia}}; "suffix forming abstract feminine...
5	Proto-Indo-European	-íh₂	—
6	Proto-Indo-European	-h₂	Creates collective nouns, which refer to groups...

Every word from Proto-Indo-European -h₂ →Every word from Ancient Greek -ῐ́ᾱ →Every word from Ancient Greek Σικελία →