When did the romantic upheaval take place in music? Who were its forerunners?

Piano and performance changes took place in nineteenth century style which were called romanticism. The notable romantic pianists Mendelssohn, Chopin, Liszt, Thalberg and Henselt were all born within five years from 1809 to 1814. The romantic upheaval itself occurred in 1830 Paris and coincided with increased popularity of the piano in most European homes.