Complex sentence: John Brand (19 August 1744--11 September 1806) was an English antiquarian, author of Observations on Popular Antiquities: including the whole of Mr Bourne's "Antiquitates Vulgares," with addenda to every chapter of that work.
Split into simpler sentences: John Brand (19 August 1744--11 September 1806) was an English antiquarian. He was author of Observations on Popular Antiquities: including the whole of Mr Bourne's "Antiquitates Vulgares," with addenda to every chapter of that work.