Complex sentence: The first American Barbary captivity narrative was by Abraham Browne (1655), but the most popular was that of Captain James Riley, entitled "An Authentic Narrative of the Loss of the Brig Commerce" (1817).
Split into simpler sentences: The first American Barbary captivity narrative was by Abraham Browne (1655). The most popular was that of Captain James Riley, entitled "An Authentic Narrative of the Loss of the Brig Commerce" (1817).