Complex sentence: Longleat is currently occupied by Alexander Thynn, 7th Marquess of Bath, a direct descendant of the builder; however, the peer passed the management of the business to his son Viscount Weymouth early in 2010.
Split into simpler sentences: Longleat is currently occupied by Alexander Thynn, 7th Marquess of Bath, a direct descendant of the builder. However The peer passed the management of the business to his son Viscount Weymouth early in 2010.