We don't have a biography for Count Nicolai Rostov yet. Hang in there, or go ahead and contribute one.
Downton Abbey Guest cast, played by Christopher Rozycki Episode 5x03: Episode 3 (Oct 5, 2014) Episode 5x04: Episode 4 (Oct 12, 2014) Episode 5x05: Episode 5 (Oct 19, 2014)