Where does “sidneyés” come from?

sidneyés (Spanish) comes from Spanish -és, from Spanish política, from Spanish político, from Latin polīticus, from Swedish politisk, from Swedish politik, from Ancient Greek πολιτικός, from Ancient Greek πολῑ́της — Creates verbal adjectives from verb stems.

sidneyés (Spanish): Sydneysider, Sydneyite native or resident of Sydney, New South Wales, Australia

Definitions

Sydneysider, Sydneyite native or resident of Sydney, New South Wales, Australia

Ancestry of “sidneyés”, step by step

Step	Language	Word	Meaning
1	Spanish	-és	Forms nouns and adjectives of nationality;...
2	Spanish	política	politics; policy; female equivalent of político
3	Spanish	político	political; in-law; politician
4	Latin	polīticus	political, civil, of the state, relating to civil polity
5	Swedish	politisk	political, having to do with politics
6	Swedish	politik	politics
7	Ancient Greek	πολιτικός	civic, constitutional, public; social
8	Ancient Greek	πολῑ́της	citizen
9	Ancient Greek	-της	Forms nouns representing a state of being; Added...
10	Proto-Hellenic	-tāts	—
11	Proto-Indo-European	-teh₂ts	Used to form nouns representing state of being
12	Proto-Indo-European	-teh₂	Used to form nouns representing state of being
13	Proto-Indo-European	-tós	Creates verbal adjectives from verb stems

Every word from Proto-Indo-European -tós →Every word from Ancient Greek -της →Every word from Ancient Greek πολῑ́της →