Romantic Ballet

Romantic ballet is a period in ballet. It is known as 'Romantic Ballet' because it sits within the period of romanticism. The era began in the 19th century with a performance by Marie Taglioni.

Dancers of the time: Marie Taglioni
                                Fanny Eissler
                                Clara Webster
                                Louise Farebrother

http://www.vam.ac.uk/content/articles/r/romantic-ballet/ 

The era didn't end, however, it declined slowly. Considered as the last work which was romantic was the performance of coppelia in 1870.

http://en.wikipedia.org/wiki/Copp%C3%A9lia

Between man and nature, the supernatural and society was much conflict and this is what the ballets focused mainly on. Taking centre stage within productions was ballerina and styles gave way to the male dancer; males mainly choreographed productions and not dance in them so females would usually play the role of a male.