Genitive in Russian---isn't you use it when we want to say from anybody? Example: nominative means name of person,or object;
nominative: Nikolai
genitivive: from/od Nikolaya
Am I correct?
I think in Russian there is 6 changes of a name--I don't know English word of that -nominative, genitiv, dative, acusative, etc.,. Names came from Latin language, I guess; nomen-name...