Where does “Moira” come from?

Moira derives from Ancient Greek μοῖρα, which came from Latin Maria, itself from Ancient Greek Μαρία, ultimately from Aramaic מַרְיָם or מרים.

Ancestry of “Moira”, step by step

Step	Language	Word	Meaning
1	Irish	Máire	Mary
2	Latin	Marīa	—
3	Ancient Greek	Μαρία	—
4	Hebrew	מִרְיָם	—
5	Aramaic	מרים	bitter
6	Biblical Hebrew	מִרְיָם	—

Every word from Biblical Hebrew מִרְיָם →

Moira — Etymology, Origin & Word History | Etymology Explorer