In the Romantic period many composers wrote string quartets: Felix Mendelssohn (1809-1847), Robert Schumann (1810-1856), Johannes Brahms (1833-1897), Pyotr Tchaikovsky (1840-1893), Antonín Dvořák (1841-1904) and many others. Some of them, like Dvořák, included folk song from their own country in their quartets.