Where does “Вьентьян” come from?

Вьентьян (Russian) comes from French Vientiane, from Lao ວຽງຈັນ, from Lao ຈັນ, from Pali canda, from Sanskrit चन्द्र, from Proto-Indo-Aryan (s)ćandrás, from Proto-Indo-Iranian (s)čandrás, from Proto-Indo-European (s)kand- — to glow, shine; to shine, glow.

Ancestry of “Вьентьян”, step by step

StepLanguageWordMeaning
1FrenchVientiane
2Laoວຽງຈັນ
3Laoຈັນmoon; Monday; sandalwood
4Palicandamoon
5Sanskritचन्द्रglittering, shining (as gold), having the brilliancy or hue of light (said of gods, of water and of soma)
6Proto-Indo-Aryan(s)ćandrás
7Proto-Indo-Iranian(s)čandrás
8Proto-Indo-European(s)kand-to glow, shine; to shine, glow
Every word from Proto-Indo-European (s)kand-Every word from Proto-Indo-Iranian (s)čandrásEvery word from Proto-Indo-Aryan (s)ćandrás