Complex sentence: The folk rock group Fotheringay was formed in 1970 by singer Sandy Denny upon her departure from Fairport Convention, and drew its name from Fotheringay Castle, where Mary Queen of Scots was imprisoned in England.
Split into simpler sentences: The folk rock group Fotheringay was formed in 1970 by singer Sandy Denny upon her departure from Fairport Convention. The band drew its name from Fotheringay Castle, where Mary Queen of Scots was imprisoned in England.