Complex sentence: Smith received great help from his brother, Arthur WW Smith (1825-1861), who had also been educated for medicine and who managed the entertainments at the Egyptian Hall from 1852 to 1860.
Split into simpler sentences: Smith received great help from his brother, Arthur WW Smith (1825-1861), who had also been educated for medicine. He managed the entertainments at the Egyptian Hall from 1852 to 1860.