Very educational. The name Ruslan.

Originally really of Turkish origin, from "Arslan" - a lion. There is a Russian legend about the rich man of Jerusalem Lazarevich, so this rich man of Persian origin (and judging by his fatherhood also a Jew), was about him - a translation of the Persian epic "Shahnama". There is, indeed, a nuance: in Shahnamah his name is Rustam, and Arslan is a nickname given for courage, but it doesn’t matter. Russian children were not so called... until the 19th century.

And then Pushkin wrote "Ruslan and Ludmila" and named the heroes as he thought the Russian names should sound before Christianity. And so successful it turned out to him that the Russian children began to be called Ruslan and Ludmila (also, by the way, the name was not in the festivals) and are called until now, and the names have become completely Russian, there is no Russier.