Where does “Ұлжан” come from?

Ұлжан (Kazakh) comes from Kazakh жан, from Persian جان, from Middle Persian yʾn', from Proto-Iranian *wyaHnáH, from Proto-Indo-Iranian wyaHnás, from Proto-Indo-European h₂enh₁‑ — to breathe.

Ancestry of “Ұлжан”, step by step

Ұлжан traces back through two separate lines of ancestry.

via Kazakh жан

Step	Language	Word	Meaning
1	Kazakh	жан	side, flank
2	Persian	جان	soul; being; life
3	Middle Persian	yʾn'	—
4	Proto-Iranian	*wyaHnáH	—
5	Proto-Indo-Iranian	wyaHnás	—
6	Proto-Indo-European	h₂enh₁‑	to breathe

via Kazakh ұл

Step	Language	Word	Meaning
1	Kazakh	ұл	son
2	Proto-Turkic	ogul	son

Every word from Proto-Indo-European h₂enh₁‑ →Every word from Proto-Indo-Iranian wyaHnás →Every word from Proto-Iranian *wyaHnáH →