Where does “Shireen” come from?

Shireen (English) comes from Persian شیرین, from Pahlavi šylyn', from Middle Persian šyl, from Proto-Iranian xšiHrám, from Proto-Indo-Iranian kšiHrám — milk.

Ancestry of “Shireen”, step by step

StepLanguageWordMeaning
1Persianشیرینsweet; pleasant
2Pahlavišylyn'—
3Middle Persianšyl—
4Proto-IranianxšiHrámmilk
5Proto-Indo-IraniankšiHrámmilk
Every word from Proto-Indo-Iranian kšiHrám →Every word from Proto-Iranian xšiHrám →Every word from Middle Persian šyl →