Complex sentence: This not only gave him a welcome bursary and access to further funds but allowed him to travel to and study in Rome and whilst there he executed several pieces including "Vainqueur au combat de coqs" in 1864 and "Joueurs de cerceau" in 1860.
Split into simpler sentences: This not only gave him a welcome bursary but allowed him to travel to and study in Rome. Whilst in Rome he executed several pieces including "Vainqueur au combat de coqs" in 1864 and "Joueurs de cerceau" in 1860.