Where does “Ecaterinescu” come from?

Ecaterinescu (Romanian) comes from Latin Ecaterina, from Ancient Greek Αἰκατερίνη, from Ancient Greek Ἑκάτη, from Ancient Greek ἑκάς, from Ancient Greek ἕ, from Proto-Hellenic hwe, from Proto-Indo-European swé — self.

Ancestry of “Ecaterinescu”, step by step

Step	Language	Word	Meaning
1	Latin	Ecaterina	—
2	Ancient Greek	Αἰκατερίνη	—
3	Ancient Greek	Ἑκάτη	Hecate
4	Ancient Greek	ἑκάς	afar, far off; long after
5	Ancient Greek	ἕ	him
6	Proto-Hellenic	hwe	—
7	Proto-Indo-European	swé	self

Every word from Proto-Indo-European swé →Every word from Proto-Hellenic hwe →Every word from Ancient Greek ἕ →