Complex sentence: Gowrie was involved in a plot to kidnap the young King James VI, son of Mary Queen of Scots, and during 1582 Gowrie and his associates seized the young king and held him prisoner for 10 months.
Split into simpler sentences: Gowrie was involved in a plot to kidnap the young King James VI, son of Mary Queen of Scots. During 1582 Gowrie and his associates seized the young king and held him prisoner for 10 months.