Where does “Сыржан” come from?

Сыржан (Kazakh) comes from Kazakh сыр, from Persian سر, from Middle Persian 𐭫𐭥𐭩𐭱𐭤, from Proto-Iranian *cŕ̥Hah, from Proto-Indo-Iranian ćŕ̥Has, from Proto-Indo-European ḱŕ̥h₂-os, from Proto-Indo-European ḱerh₂- — head, top; horn.

Ancestry of “Сыржан”, step by step

Сыржан traces back through two separate lines of ancestry.

via Kazakh сыр

StepLanguageWordMeaning
1Kazakhсырpaint; glaze; enamel; secret
2Persianسرhead; the topmost, foremost, or leading part;...
3Middle Persian𐭫𐭥𐭩𐭱𐭤head; top, summit
4Proto-Iranian*cŕ̥Hah—
5Proto-Indo-Iranianćŕ̥Hashead, top
6Proto-Indo-Europeanḱŕ̥h₂-os—
7Proto-Indo-Europeanḱerh₂-head, top; horn

via Kazakh жан

StepLanguageWordMeaning
1Kazakhжанside, flank
2Persianجانsoul; being; life
3Middle Persianyʾn'—
4Proto-Iranian*wyaHnáH—
5Proto-Indo-IranianwyaHnás—
6Proto-Indo-Europeanh₂enh₁‑to breathe
Every word from Proto-Indo-European ḱerh₂- →Every word from Proto-Indo-European ḱŕ̥h₂-os →Every word from Proto-Indo-Iranian ćŕ̥Has →