Where does “Sian” come from?

Sian is an English word derived from Central Kurdish سیان with an unknown original meaning.

Ancestry of “Sian”, step by step

Step	Language	Word	Meaning
1	Welsh	Siân	—
2	Latin	Joanna	—
3	Ancient Greek	Ἰωάννα	—
4	Hebrew	יוֹחָנָה	—
5	Hebrew	יוֹחָנָן	God is gracious
6	Hebrew	יְהוֹחָנָן	God is gracious

Sian — Etymology, Origin & Word History | Etymology Explorer