Complex sentence: Sir Alexander Seton, 1st Viscount of Kingston (March 13,1620--October 21,1691), a Cavalier, was the first dignity Charles II conferred as King.
Split into simpler sentences: Sir Alexander Seton, 1st Viscount of Kingston, (March 13,1620-died October 21,1691). A Cavalier, his was the first dignity Charles II conferred as King.