Complex sentence: Lindsey Audrey Jennifer Hughes (May 4,1949--April 26,2007) was a world-renowned British historian who specialized in the history of 17th and 18th century Russia, especially on Peter the Great and the era of Petrine Russia.
Split into simpler sentences: Lindsey Audrey Jennifer Hughes (May 4,1949--April 26,2007) was a historian of Russia. Hughes was a world-renowned expert on Russian history of the 17th and 18th centuries, especially on Peter the Great and the history of Petrine Russia.