Complex sentence: Alexander Grigoriyevich Stroganov a member of the Stroganovs family, was the Governor general of Novorossiia and Bessarabia from 1855 to 1863.
Split into simpler sentences: Alexander Grigoriyevich Stroganov a member of the Stroganovs family. He also served as the Governor general of Novorossiia and Bessarabia from 1855 to 1863.