Nikolai, or Николай
Douwg
Matvey
Клиффорд. Pretty much a direct translation of the name.
José is the Spanish equivalent of the English Joseph. The Russian equivalent would be Иосиф (pron: Iosif).
Бріттні Brittni
Дмитрий Dmitry
Морин Morin
Чарльз (Charl'ze) is how you would spell the name in Russian, if that's what you mean.
Juana = Ivana (Ивана)
Jonny, Johnny
The Russian language equivalent of the name Mark is ΠΠ°ΡΠΊ (pronounced "mark").
Russian is the English equivalent of 'rusa'. The Spanish word functions as an adjective or as a noun in a Spanish sentence. It may refer to the Russian people or to the Russian language.