Complex sentence: His descendant Frederick Tylney, who stood as MP for Whitchurch in Jan.1708, built a great mansion on the estate in 1700, called Tylney Hall, which was rebuilt in 1898 in the Victorian style, now a country hotel.
Split into simpler sentences: His descendant Frederick Tylney, who stood as MP for Whitchurch in January 1708, built a great mansion on the estate in 1700, called Tylney Hall. It was was rebuilt in 1898 in the Victorian style, and is now a country hotel.