Complex sentence: In the summer of 1892 Robey conducted a tour of the English provinces starting at Barnard's Music Hall in Chatham then appeared at the Parthenon Music Hall in Liverpool, a venue owned by the mother of the influential London impresario Oswald Stoll.
Split into simpler sentences: In the summer of 1892 Robey conducted a tour of the English provinces starting at Barnard's Music Hall in Chatham. From there he travelled to Liverpool where he appeared at the Parthenon Music Hall, a venue owned by the mother of the influential London impresario Oswald Stoll.