Where does “Atreïde” come from?

Atreïde (Dutch) comes from Ancient Greek Ἀτρείδης, from Ancient Greek -ίδης, from Ancient Greek -ής, from Proto-Indo-European -ēs, from Proto-Indo-European -ess, from Proto-Indo-European -os — Creates action nouns or result nouns from verbs;...

Atreïde (Dutch): Atreid

Definitions

Atreid

Ancestry of “Atreïde”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	Ἀτρείδης	a child of Atreus, an Atreid
2	Ancient Greek	-ίδης	son of
3	Ancient Greek	-ής	adjective suffix
4	Proto-Indo-European	-ēs	Primarily forms adjectival bahuvrīhi compounds
5	Proto-Indo-European	-ess	—
6	Proto-Indo-European	-os	Creates action nouns or result nouns from verbs;...

Every word from Proto-Indo-European -os →Every word from Ancient Greek -ής →Every word from Ancient Greek -ίδης →